GPS consumption + in-car charging - Galaxy S II Q&A, Help & Troubleshooting

Hi,
For my Galaxy S2, I'm on firmware 2.3.6 (on Samsung Stock ROM). Today , I run a little bit of field test, what will happen to my battery % when using the phone as GPS and charging it at the same time using the in-car cable.
For around 20-25 minutes of GPS usage, I lost 4%-5% of battery power. If I do cross-country GPS usage, that means, every hour, I'll loose around 12% of power. That gives me only around 7 hours of navigation.
It is enough, but if I do a lot of stop ... during these stops, the phone is not charged. So , probably the amount of usage is around 5 hours of navigation.
Does anyone has a good trick to reduce this consumption?

Hello there.
The first step you should take for reducing battery usage is flashing a different ROM and kernel. I'm using VillainRom 3.0 and SiyahKernel.
Second step would be installing voltage control from the market and either changing max frequency your phone runs at, undervolt a little (-100 mV each freq works like a charm for me) and also get 2nd core from the market and choose a single core mode.
Also the display is the most hungry part of the device so avoid using auto brightness and set your own.
Hope it helps youbto squeeze a little bit more power from your device.
Sent from outer space by aliens on tapatalk using SGS2

google maps uses alot of battery and data to run.
stand alone navigation programs also use battery power. check settings if there battery saver.

AJ.Rockwell said:
Hello there.
The first step you should take for reducing battery usage is flashing a different ROM and kernel. I'm using VillainRom 3.0 and SiyahKernel.
Second step would be installing voltage control from the market and either changing max frequency your phone runs at, undervolt a little (-100 mV each freq works like a charm for me) and also get 2nd core from the market and choose a single core mode.
Also the display is the most hungry part of the device so avoid using auto brightness and set your own.
Hope it helps youbto squeeze a little bit more power from your device.
Sent from outer space by aliens on tapatalk using SGS2
Click to expand...
Click to collapse
Hi,
Thanks...
SiyahKernel and Speedmod kernel - do you have experience when it comes to battery perfomance?
I just flashed another modem. I'm going to go for another "test-ride" on it..
if that didn't improve. i'll try the Siyakernel. Thanks..

Cosmic Blue said:
google maps uses alot of battery and data to run.
stand alone navigation programs also use battery power. check settings if there battery saver.
Click to expand...
Click to collapse
Use a lot of battery is understandable, but i hope it'll be less than the amount of power going into the phone while charging..

I tested the 2.3.6 Samsung standard Kernel and SpeedMod.
I think the Google Navigation seems to use less power. The Papago still remain power hungry.

if you have 2.3.6 you should have system power saving in the settings menu, which should disable one of the processor's cores. it may be abit slower but see how that works for battery life

Related

Crazy battery drain // please help.

How you guys get even 2 days of battery??
I am tired of tryin gall the combinations of settings / kernel / ROMS nothing has helped till date.
I am not able to get battery for a complete day. Freaking it drains it off in 9-10 hours.
There are users who are getting 2 days of battery with wifi/edge on at all the time, with overclocked phone, and many other options enabled. But I am not getting any of these.
My usage includes
* 1-2 hrs of music
* 1-2 hrs of edge
* frequent texting but can be summarized for 1 hr in a day.
* hardly 10-30 mins of calls
* 10-30mins of games
CyanogenMatt 1.1
franco kernel 19.4 gbs v18cfs
InteractiveX 480-600 mhz
all this is normal and way below average usage but still I am not able to get battery life. I hate recharging the phone after every few hours. Have searched forums tried suggestion but nothing worked.
Maybe I am choosing wrong combination of ROM / kernel , I have gone complete clueless now, any help or suggestion is welcome.
droidevil said:
How you guys get even 2 days of battery??
I am tired of tryin gall the combinations of settings / kernel / ROMS nothing has helped till date.
I am not able to get battery for a complete day. Freaking it drains it off in 9-10 hours.
There are users who are getting 2 days of battery with wifi/edge on at all the time, with overclocked phone, and many other options enabled. But I am not getting any of these.
My usage includes
* 1-2 hrs of music
* 1-2 hrs of edge
* frequent texting but can be summarized for 1 hr in a day.
* hardly 10-30 mins of calls
* 10-30mins of games
CyanogenMatt 1.1
franco kernel 19.4 gbs v18cfs
InteractiveX 480-600 mhz
all this is normal and way below average usage but still I am not able to get battery life. I hate recharging the phone after every few hours. Have searched forums tried suggestion but nothing worked.
Maybe I am choosing wrong combination of ROM / kernel , I have gone complete clueless now, any help or suggestion is welcome.
Click to expand...
Click to collapse
It is because of usage patterns. Based on your usage, I think its normally for your battery to drain just like that.
Sent from my LG-P500 using XDA App
Thanks for replying terratrix,
but users are using continuous wi-fi and get a complete day of battery, I dont even use that. AFAIK wi-fi uses more battery than EDGE. Can you suggest me proper ROM+kernel combination?
I installed cyanogenmatt 1.1 thinking it would improve battery life but it didnt.
droidevil said:
Thanks for replying terratrix,
but users are using continuous wi-fi and get a complete day of battery, I dont even use that. AFAIK wi-fi uses more battery than EDGE. Can you suggest me proper ROM+kernel combination?
I installed cyanogenmatt 1.1 thinking it would improve battery life but it didnt.
Click to expand...
Click to collapse
Well theta because they are using the phone less often. You are wrong , wifi consumes far less battery than edge. Wifi on standby drains minimal battery.
Sent from my LG-P500 using XDA App
It's mostly about background tasks. Install supercharger and a task killer to kill your tasks on screen off. Then disable unneeded autostarting applications with Gemini or Autostarts. This way I get about 1% battery for 4 hours without using my phone. And I strongly advice you to use 480/YourMaxStable with SmartassV2 as Smartass automatically manages the current CPU frequency. Your brightness should be between 25 and 50%. And also disable any unused at the moment radio (including mobile data).
how would I disable radio?
do you mean not using radio is disable it??
Well here's how my phone goes on for 2 days
android assistant app for cleaning memory every 10 minutes and for killing apps on startup
Advanced task killer for killing tasks(set on auto kill)
Antutu power saver which has some good features(puts phone on flight mode at night for few hours)
or use juice defender(has extra features)
try keeping edge/3g/wi-fi/bluetooth/gps off when not using(saves a lot of battery)
reduced brightness(40-50%)
and keep screen off when not in use
also keep OC freq at 729/480 its the best know OC for our phone performance and battery wise
and InteractiveX is well know for battery saving
(i prefer on-demand because of performance and gaming )
the above things help me use my phone for 2 days or i must say 1&1/2 day
with 4-5 hours gaming(3d HD games)
1-2hours browsing the net
few messages and calls here and there
on a full charge and normal usage at the end of the day i have phone battery at 40-50%
A radio is basically a wireless I/O device. GPS, Bluetooth, Baseband, WiFi, FM... - these are different types of radios. They drain power when powered on so if you want battery life you should simply disable the ones that you aren't using at the moment.
@viv_jen: There is no need to autokill every 10 minutes if you don't have unneeded autostart applications. Task managers also drain battery if used too often. It's also a good idea to use the long-press back key feature of CyanogenMod (It kills the currently visible task).
To pitch in my 2 cents worth,
I've found wifi uses quite a bit less than edge/3g data on this particular phone.
This phone has shocking battery life, even for a smartphone.
What you are getting seems about normal for your usage. My battery will be between 20 and 30% after 4 hours of music and 3g browsing. Once I stop doing these things it goes down at about 2% an hour on wifi, about 3% an hour on 2g, and 5% an hour on 3g. I ended up keeping my charge cable on me when I go places and actively use the phone, and "topping up" the battery when I'm sitting at a desk or whatever.
thank you guys for valuable inputs,
could the combination of ROM + kernel also help?
I tried cyanogenmatt + goldenleaf after some of the user suggested that it gives enough battery.
I also heard void gives a good battery.
droidevil said:
I also heard void gives a good battery.
Click to expand...
Click to collapse
yep it does
for me atleast
@nogav: WiFi drain depends mostly on Tx (Transmit) power. Mostly we receive information from the internet (Which means Rx is way more important than Tx), so after running a few speed tests (Speedtest.net app) at each option avaliable at the Wifi Tx Power app from market I found out that internet speed at a Tx power of 4dBm is roughtly the same as for 32dBm. Also, our device only supports 801.11b/g mode, so internet speed isn't the best thing about Optimus One (Excluding HDSPA).
@droidevil: The thing that drains most battery is Stagefright. It is able to play 520p mp4 videos almost smoothly, but it is a battery killer. Hardware acceleration also increases performance at the cost of battery, but it is reasonably balanced. Other things that depend on roms: number of preinstalled apps. Deodexed apps load faster, and the less of them there are, the faster the phone boots and runs. If you have about 100-200 programs installed, Autostarts, Advanced Task Killer and Supercharger are likely to be used.
thank you guys for your useful information..
Just raised all urs thanks meter for helping me out..
Well I have installed android assistant set to auto kill on every 10 mins.
Installed gemini and stopped the apps which are set to open on boot.
brightness is the minimum
480-728mhz with InteractiveX
so far 12 hours have passed by and have 50% left
Normal texting, gprs browsing, music no games though.
Lets see how far can I pull it off.
droidevil said:
Well I have installed android assistant set to auto kill on every 10 mins.
Installed gemini and stopped the apps which are set to open on boot.
brightness is the minimum
480-728mhz with InteractiveX
so far 12 hours have passed by and have 50% left
Normal texting, gprs browsing, music no games though.
Lets see how far can I pull it off.
Click to expand...
Click to collapse
Nonono, don't use autokill, they are just crap, not needed, they drain more battery.
I have installed void forever to see whether it helps in battery performance.
The ROM itself is very fast, just wondering which kernel will best suit the rom to give the desired battery performance.
Any suggestions please..!!!!!
My LG optimus v running iho cm7 only gets about two hours of battery through normal use.
droidevil said:
I have installed void forever to see whether it helps in battery performance.
The ROM itself is very fast, just wondering which kernel will best suit the rom to give the desired battery performance.
Any suggestions please..!!!!!
Click to expand...
Click to collapse
franco
and use interactiveX governor(if you want for battery)
franco's CFS / BFS?
I have read around that fserve's kernel also gives good battery...
IMHO, actually your battery drain is actually pretty good for a usage like that, I am using more or less the usage of yours and everyday I have to charge.

Leedroid´s ROM All Questione & Answers

THIS THREAD IS FOR ALL QUESTIONS AND ANSWERS WHICH HAS NOTHING TO DO WITH DEVELOPEMENT!!!
I think about 50% of the Post´s in Lees Developement Thread are irrelevant vor him. A Developement Thread is for bugreport, for things which doesnt work, ....
And not for: "When is the next release?" "Can you please include this and this ..." "A third parts app is not working" ...... and so on and so on!
Its Lee´s Rom and its his joice what he will include and what not!
So please Guys post here and keep the Developement Thread clean!!!!!
Best reagrds
Can someone confirm, that without the dual core scripts the 2nd core never kicks in? The normal behaviour should be that the 2nd core kicks in when the first core is stressed, e.g. setcpu stress test ore playing a 3D game.
Lee confirmed, that he configured the second core to be not so sensible..and said that he will have a look at the config again.
I think the behaviour of the second core is controlled in the system/bin/mpdecision file...I changed it with one of a Evo 3D cdma rom,after that i saw the first time that my second core kicks in in system tuner, it turned on/off several times - altough it shouldn't be needed.
i think the standard config is too sensible, so it was a good move from lee to lower it - but I think now with the current config it seems that the second core is completly turned off =D
Yep i can confirm! My second score never kicks in! Ive flashed the ondemand patch from first post and undervolted -100 and love the battery life now!
lichti1901 said:
Yep i can confirm! My second score never kicks in! Ive flashed the ondemand patch from first post and undervolted -100 and love the battery life now!
Click to expand...
Click to collapse
...I don't like the behaviour, that the second core is always on - not very battery friendly
Hope Lee will fix this issue in the next release - hopefully he will use the new base which is flaoting around the gsm forums.
j4n87 said:
...I don't like the behaviour, that the second core is always on - not very battery friendly
Hope Lee will fix this issue in the next release - hopefully he will use the new base which is flaoting around the gsm forums.
Click to expand...
Click to collapse
Yeah i know but battery life for my usage is ok! But i know dat right. I really miss 3 days of battery life with my Nexus S! But i know the kernels getting better and better
what do you guys use to change the volt with lee's kernel ?
I am having huge battery drain and cant figure out what it is!?
getting about 100-300 mA in standby 90% of the time and an everything from 450 - 950 mA while using the phone, some times I don't even use any load on the cpu but it still peaks to 900 mA
I am carefully watching a cpu notification while using the phone and it draws usually 300+ mA with max 10 % cpu load with interactive governor
I tried downclock to 192MHz and disabling second core (since it never enables with lee's new rom) and it still uses the exact same mA. so downclock and disabling doesnt help the powerdrain at all
what to do ? just lost about 10 % by 15 minutes of standby !?
my only thought was that the cpu was giving the same voltage no matter what the frequency is, so if there is any app that could change the volt ?
have any of you had huge power drain ? could anyone try to check how much mA your evo uses in standby with the new kernel and rom ?
thunstop said:
what do you guys use to change the volt with lee's kernel ?
I am having huge battery drain and cant figure out what it is!?
getting about 100-300 mA in standby 90% of the time and an everything from 450 - 950 mA while using the phone, some times I don't even use any load on the cpu but it still peaks to 900 mA
I am carefully watching a cpu notification while using the phone and it draws usually 300+ mA with max 10 % cpu load with interactive governor
I tried downclock to 192MHz and disabling second core (since it never enables with lee's new rom) and it still uses the exact same mA. so downclock and disabling doesnt help the powerdrain at all
what to do ? just lost about 10 % by 15 minutes of standby !?
my only thought was that the cpu was giving the same voltage no matter what the frequency is, so if there is any app that could change the volt ?
have any of you had huge power drain ? could anyone try to check how much mA your evo uses in standby with the new kernel and rom ?
Click to expand...
Click to collapse
dont trust the ma values, for me all battery apps are showing 200+ in standby. htc delivers crappy weird ma values and theirs no way to fix that. The dev if battery monitor can confirm that.
...im loosing 1% over night.
Try to reinstall rom without third party app. Are you using htc Mail with exchange - it got a bug which keeps your device awake when in airplane mode.
Theres also an app in the market, where you can check if your phone goes to standby or not..srx dont remember the name - Google it
Sent from my HTC EVO 3D X515m using xda premium
well have you tried "battery Monitor widget pro" thats the one I am using, it has an fix for evo 3d to fix mA drain
problem is that I calculated the drain by just simple math and it confirms the mA drain ;/ so the program does really appear to be correct
maybe some one else could try "battery Monitor widget pro" and see if they are experiencing the same mA drain with this program ?
but the strange thing is that it wasnt draining so much before the kernel update and rom, and some times it goes down to normal usage but happens rarely
I do not use mail exchange, going to check for the standby program though and try to reinstall without any apps ! thanks for the suggestion
thunstop said:
well have you tried "battery Monitor widget pro" thats the one I am using, it has an fix for evo 3d to fix mA drain
problem is that I calculated the drain by just simple math and it confirms the mA drain ;/ so the program does really appear to be correct
maybe some one else could try "battery Monitor widget pro" and see if they are experiencing the same mA drain with this program ?
but the strange thing is that it wasnt draining so much before the kernel update and rom, and some times it goes down to normal usage but happens rarely
I do not use mail exchange, going to check for the standby program though and try to reinstall without any apps ! thanks for the suggestion
Click to expand...
Click to collapse
Yeah, know this app but its not working for me, still shows >200 during screen off also with the special evo 3d fix.
..searched about 30 min to find that app:
Cpu spy from market.
it shows you how long your device is on which frequencies or in deep sleep.
Reset the values in the menu and turn your device off. After a minute check the values.
Sent from my HTC EVO 3D X515m using xda premium
I just tested the cpu spy, and I had the screen off for 5 min, and only deep state was counted, said 90% (5 min)
And 30 second on 192mhz
Seems to be right?
yeah, should be fine. And yourre sure, that you lost 10% of battery in 15min of standby? Try calibrating your battery with battery calibration from market.
charge to 100% and then calibrate.
yes 100 % sure but i wass messing with the the frequency of the cpu , might be what drained the power because today it has been normal standby time
already used battery calibrating, it did get a little better in standby after that.
but i still have huge power drain by just turning on the screen, and typing
i had just sent a couple of messages through "messenger for facebook" throught an hour and it used 20 % battery and I only turned on the screen, unlocked it typed a fast short messages and turned the screen off again a couple of times
I was connected with Edge all the time (gsm) since 3G was turned off to save battery but still huge power drain.
I just feel like every time the screen is on the % start falling fast :s
thats why I wanted to check out undervolting but cant find a app that supports lee's kernel
thunstop said:
yes 100 % sure but i wass messing with the the frequency of the cpu , might be what drained the power because today it has been normal standby time
already used battery calibrating, it did get a little better in standby after that.
but i still have huge power drain by just turning on the screen, and typing
i had just sent a couple of messages through "messenger for facebook" throught an hour and it used 20 % battery and I only turned on the screen, unlocked it typed a fast short messages and turned the screen off again a couple of times
I was connected with Edge all the time (gsm) since 3G was turned off to save battery but still huge power drain.
I just feel like every time the screen is on the % start falling fast :s
thats why I wanted to check out undervolting but cant find a app that supports lee's kernel
Click to expand...
Click to collapse
Use System Tuner from 3c (same dev as battery monitor) to undervolt.
Easy as hell
Haha thanks, lol I had an old version of system tuner that's why I didn't have any voltage control
Seems like my battery life is a bit more normal now, thanks for all the help and time you spent!
thunstop said:
Haha thanks, lol I had an old version of system tuner that's why I didn't have any voltage control
Seems like my battery life is a bit more normal now, thanks for all the help and time you spent!
Click to expand...
Click to collapse
You're welcome
thunstop said:
yes 100 % sure but i wass messing with the the frequency of the cpu , might be what drained the power because today it has been normal standby time
already used battery calibrating, it did get a little better in standby after that.
but i still have huge power drain by just turning on the screen, and typing
i had just sent a couple of messages through "messenger for facebook" throught an hour and it used 20 % battery and I only turned on the screen, unlocked it typed a fast short messages and turned the screen off again a couple of times
I was connected with Edge all the time (gsm) since 3G was turned off to save battery but still huge power drain.
I just feel like every time the screen is on the % start falling fast :s
thats why I wanted to check out undervolting but cant find a app that supports lee's kernel
Click to expand...
Click to collapse
Maybe Edge is the problem for your battery-drain! When my Evo is on Edge it needs way more battery as with 3g!
And try to disable "automatic display light" (no plan how it is called in english). I always use the second stage from 4... i hope you know what i mean!
lichti1901 said:
Maybe Edge is the problem for your battery-drain! When my Evo is on Edge it needs way more battery as with 3g!
And try to disable "automatic display light" (no plan how it is called in english). I always use the second stage from 4... i hope you know what i mean!
Click to expand...
Click to collapse
Well I did notice that edge drain at least as much as 3g so no point at disabling 3g, I got my battery a little more stable but still use Huge power drain sometimes
But going to reinstall everything, do a clean wipe and stuff and install only the apps I use not all the cap I got now.
Maybe that will help a bit on the battery
still questioning the LeeDrOiD rom for battery life.
I love the rom but miss battery life, sense 3.5 and the new Android version 4(i know the new android version isn't released for htc evo 3d yet though) but really looking forward to it!

should i continuously use my phone on power saving mode?

I hve been using my phone on power saving mode from 2 days to save battery and to hve more life out of it. I wana ask tht it is ok to use it continuously on power saving mode forever??
Any ideas??
No problem in using power mode all the time. It's a feature Samsung enables to save battery
Yep. Can't see a problem except the expected performance downgrade etc.
Sent from my GT-I9300T using xda premium
Personally I hated the power saving modes in every smartphone i had cause it affects performance. I will buy a spsre battery and a charger. If you are ok with the performance in power saving mode you should use it!
Enjoy your phone to its maximal potential. Don't let the battery saving issue to disturb your user experience.
Sent from my GT-I9300 using XDA
My phone doesn't decrease in performance with saving mode enabled. It is always fast.
Sent from my GT-I9300
CreekDirt said:
My phone doesn't decrease in performance with saving mode enabled. It is always fast.
Sent from my GT-I9300
Click to expand...
Click to collapse
Not the case with mine, I notice a decrease in performance. It most likely under clocks the CPU...
In regards to the original question, no there is nothing wrong with leaving the phone in power saver mode. In fact you could probably argue that its better as the phone creates less heat.
Ideally I'd like to overclock mine
Well there is no such thing as saving power without sacreficing preformance. (unless you undervolt it or use more power effectient drivers)
But you should be ok running in power save mode all the time, although I do question why you bought a top of the line smartphone then. I think you would have saved more power (and money) buying a lower end phone.
It does govern the cpu. You can uncheck it. I leave mine checked.
Sent from my GT-I9300
Truely speaking i cant see diiference of even 1% in comparison to power saving and normal mode. Any one knows y battrey depleting though good but at same rate in both modes??
juice defender app does a good job for me. i use the basic settings but you can tweak it to save more battery.
Power saving appears to cap the clock speed at 1.0 GHz rather than 1.4 GHz and it may also disable cores, too. Most of the time it feels just as responsive to use. It is less snappy for some apps and benchmarks quite a bit slower, but I feel I'm splitting hairs as it still feels quicker than my last handset.
I see two days of moderate use with Power Saving on. I don't quite see two days with it off, but the difference is probably not statistically significant and the device is still new.
Power Saving
im using a power saving application on Xperia S ... is it okay to keep it working all the time??
thank you ....
ButterMaker: first of all, wrong forum, also battery saving apps are known to interfere with androids way to handle memory so I would say no
CuttyCZ said:
ButterMaker: first of all, wrong forum, also battery saving apps are known to interfere with androids way to handle memory so I would say no
Click to expand...
Click to collapse
Yes, should not use battery/ram optimization apps. They interfere with androids core system.
I uninstalled all these apps after trying and researching. They eat more battery then they save. I only use battery stats apps to keep a log of battery drain.
Now I easily get 40+ hours on my S3 with moderate uses.

Battery Life Tips?

I was wondering if any of you people could be kind enough to give me some more battery tips for my new SGS3.
I'm getting around 4-5% / hour battery drain on standby. I have 2 GMail accounts on sync.
Here's what I've done:
-> Removed Kik Messenger because it was commandeering an outrageous amount of Wakelock Time (about 5-11% of Wakelock Time in 4-7 hours).
-> Installed Omega v5.0 (latest).
-> Still on Stock Kernel
-> Changed my WiFi Policy to "Only when Plugged in"
Turn off automatic synchronizatikn for fcbk email or other accounts.
Sent from my GT-I9300 using XDA
Totòòò said:
Turn off automatic synchronizatikn for fcbk email or other accounts.
Sent from my GT-I9300 using XDA
Click to expand...
Click to collapse
What does Facebook sync anyway? I always thought it was just once to get the contact pictures. I will disable it now
I've been using Foxhound and Siyah kernel, super combo. I can honestly say it's the best performance/battery life on any android device I've used, 6+ hours of screen on consistently - wifi/gps on, 3gmails autosyncing, autobrightness, 1hr>calls, 50+texts, light browsing, redditt, Google Music... Battery life is so subjective though depending on your apps, usage, cell signal, etc.
Experiment! All things being equal, in my experience its the kernels that make the biggest difference in significant battery life improvements, with the exception of stock roms vs. AOSP/AOKP, battery life doesn't differ very much minus bloatware in the various roms. And if you're a flashaholic like me you'll actually have to wait a few charge cycles to get an accurate representation of battery performance for your phone.
kchino said:
I've been using Foxhound and Siyah kernel, super combo. I can honestly say it's the best performance/battery life on any android device I've used, 6+ hours of screen on consistently - wifi/gps on, 3gmails autosyncing, autobrightness, 1hr>calls, 50+texts, light browsing, redditt, Google Music... Battery life is so subjective though depending on your apps, usage, cell signal, etc.
Experiment! All things being equal, in my experience its the kernels that make the biggest difference in significant battery life improvements, with the exception of stock roms vs. AOSP/AOKP, battery life doesn't differ very much minus bloatware in the various roms. And if you're a flashaholic like me you'll actually have to wait a few charge cycles to get an accurate representation of battery performance for your phone.
Click to expand...
Click to collapse
Thanks for the big post! ^v^. I am going to flash the SiyahKernel. But after turning Facebook Sync and the Wifi Policy (which I found out about today).
My battery is at 93% at 2h 01m 05s (also my battery goes down to 99% as soon as I take it off the charger). So thats 6% in 2 hours which is 3% / hour ! Getting there ^^
Apparently going to 99% immediatelly after the charger is normal for Samsung devices. So I wouldn't count that as reduction.
I dont use aftermarket kernels and roms, I have disabled a few stock programs I do not use and get a very decent battery with the 2x battery saver. I had already ordered a secondary battery which is on its way actually as well, so ill be covered from there on
sent with SGS3
Annie the Eagle said:
Thanks for the big post! ^v^. I am going to flash the SiyahKernel. But after turning Facebook Sync and the Wifi Policy (which I found out about today).
My battery is at 93% at 2h 01m 05s (also my battery goes down to 99% as soon as I take it off the charger). So thats 6% in 2 hours which is 3% / hour ! Getting there ^^
Click to expand...
Click to collapse
99% right off the charger is a feature .
Undervolting is an option as well.
kchino said:
99% right off the charger is a feature .
Undervolting is an option as well.
Click to expand...
Click to collapse
Oh my! Great feature! Do you know of a guide on how to do that, or is that just a fancy term for "underclocking" ^v^
As I am still on stock kernel I am obviously still on stock speeds but I'm going to flash SiyahKernel after I finish uploading photos of my A77
Annie the Eagle said:
Oh my! Great feature! Do you know of a guide on how to do that, or is that just a fancy term for "underclocking" ^v^
As I am still on stock kernel I am obviously still on stock speeds but I'm going to flash SiyahKernel after I finish uploading photos of my A77
Click to expand...
Click to collapse
I don't think there are any OC/UV guides in the SGS3 forums but you could search XDA to acquaint yourself, there many writeups on the subject. Make sure have ADB and are familiar with it before so you can recover if necessary from any mishaps. Every processor has a different tolerance to OC/UV so there isn't a tried and true method of implementing it you just have to use trial and error.
I won't get in to it too much but undervolting and underclocking are related but different. Undervolting effectively ask the processor to run with less power from the battery at a specific clock speed or frequency. Underclocking would be reducing the overall frequency of the processor depending on the load. They can be used independently or together.
kchino said:
I don't think there are any OC/UV guides in the SGS3 forums but you could search XDA to acquaint yourself, there many writeups on the subject. Make sure have ADB and are familiar with it before so you can recover if necessary from any mishaps. Every processor has a different tolerance to OC/UV so there isn't a tried and true method of implementing it you just have to use trial and error.
I won't get in to it too much but undervolting and underclocking are related but different. Undervolting effectively ask the processor to run with less power from the battery at a specific clock speed or frequency. Underclocking would be reducing the overall frequency of the processor depending on the load. They can be used independently or together.
Click to expand...
Click to collapse
Ah thanks a-lot. Would creating a profile to limit the CPU to 300 MHz MAX during screen off save battery also?
I have SetCPU installed and have flashed to SiyahKernel now but haven't fiddled with it yet.
Annie the Eagle said:
Ah thanks a-lot. Would creating a profile to limit the CPU to 300 MHz MAX during screen off save battery also?
I have SetCPU installed and have flashed to SiyahKernel now but haven't fiddled with it yet.
Click to expand...
Click to collapse
Download extweaks from the market instead to configure Siyah. Extweaks hasn't been optimized for the SGS3 yet but it works better than SetCPU with Siyah, it also has descriptions of what each setting does.
If you aren't a gamer you could even toggle two of the cores off, definitely will increase your battery without much if any performance hit in real usage.

[Mega-Guide][14/01/14] Get a (Battery) Life! Every possible way to save your battery.

Links pointing to androidbatterylife.com are DOWN FOR GOOD!
Android Battery Life, a pretty successful website has been made in order to help android users achieve better battery life while still using many functions and apps. All of these guides are available, with screenshots, at www.androidbatterylife.com
It's my 2000th post here on xda, and I wanna make it special
PORTAL! http://www.xda-developers.com/android/battery-saving-mega-guide-celebrating-users-2000th-post/
A lot of users are thinking that everything mentioned should be applied. You don't have to apply all of them, just apply what you think works for you. This is more of an index of guides, if you will.
Yes, this is in the Android Q&A, Help & Troubleshooting because of the word "Troubleshooting"... I'm shooting your "Low battery life" trouble in the face.
So let's begin:
The guide is split into 3 parts: Easy, Medium, and Advanced.
First up is... you guessed it..
Easy​
Screen / Display LINK
If you go to Settings>Battery, you’ll clearly see that “Screen” has the biggest bar of about 40-60%. The bigger the bar (and the number), the bigger the battery drain. We’ll try to lower that bar as much as we can.
Brightness
First of all, to reduce the battery drain caused by the display, click on the Screen button, then click display (it’s the same as going to Settings>Display), then click on brightness, untick Auto-Brightness if it’s ticked and lower the brightness to minimum.
Explanation: A brighter screen means the screen is emitting more light, which consumes more battery. So lowering the brightness makes the screen use less battery juice.
Wallpaper
Second thing to do to reduce the “Screen” battery consumption is having a Static Wallpaper, and not a Live Wallpaper. So go to Settings>Display and click Wallpaper, and pick any wallpaper you want except the wallpapers from the Live Wallpapers list.
Explanation: Live Wallpapers use the CPU (and possibly the GPU) to make the image move. So the phone is using the CPU to process these images, which means more battery sucking, and we don’t want that.
Sleep
Again, go to Settings>Display, and click Sleep (aka screen timeout) and set that to something less than 1 minute. I personally use 30 seconds and it’s good enough for day-to-day use.
Explanation: The more time the screen is on, the higher is the battery usage, because the screen won’t be using the battery when it’s off…
Framework Animation
Fourth thing to do is disable the Framework Animations. Framework Animations are the animations you see when you switch from an app to another app, or when you press home, or back, or recent apps buttons. To turn those off go to Settings>Developer options (if you don’t see that, then go to About Phone and press the Build Number button 8 times, then go back), scroll down to drawing section, and set Window animation scale, Transition animation scale, and Animator duration scale to “Animation off”.
Explanation: Framework Animations use the GPU (and possibly the CPU) to draw the frames of the animations, so by turning them off, you’re pulling some load off of the GPU and CPU to make the battery life better.
Widgets
Believe it or not, widgets can greatly affect battery life, it's because they update themselves regularly. This can wake up the phone a lot of times. So the best way to prevent this is to remove all the widgets on the homescreen.... and maybe keep the ones that don't update themselves much.
Remember, everything that’s shown on-screen that isn't app related is registered as “Screen” in the battery window. So to lower that, you have to compromise every little thing that’s shown on the screen.
Click to expand...
Click to collapse
Google Services LINK
One major issue you may face with Google Services is the location battery drain. This was born in Android 4.2.2 and can be easily fixed by just unticking a button.
Problem
The real problem is, in one word, Location.
Google Services such as Gmail, Now, Maps, and Google+ constantly polls your location using your wifi (if you're connected) or your cell network. And every time Google Services poll your location, your battery gets affected. So what's the solution to that?
Solution
Further research by Galaxo60 proved that going to Settings - Location Settings (or Location on android 4.4), and unticking WiFi & mobile network location (or setting the Mode to Device Only) prevents Google Services from polling your location, thus preventing the battery drain
So disable the WiFi & mobile network location option, and actually tick and turn on GPS satellites. (It's just like setting the Mode to Device only on KitKat)
But why do that? Why should I turn on GPS?
Picture taken using Android 4.4 KitKat
Explanation
Google Services don't use your GPS to poll your location, so your GPS actually stays offline most of the time; and the reason you should enable GPS is to "Let apps that have asked your permission use your location information".
Click to expand...
Click to collapse
Go Dark LINK
Some devices have AMOLED or SAMOLED (Super-AMOLED) screens, like the Samsung Galaxy SII and the Motorola Moto X. The following method is helpful for these kind of devices.
You may check what's your screen type to see if it's AMOLED or not. If it's not, this method won't help you achieve better battery life, but may help your eyes
What's AMOLED?
AMOLED is a screen type designed to get the highest contrast a screen can get to. Black pixels turn themselves off, unlike the IPS screens that always require a backlight. So AMOLED has less battery consumption than most screen types.
What to do?
Try turning everything as dark as you can. So make the wallpaper have as much black areas as possible, and use dark apps. The best way to convert most apps to dark apps is downloading Team Black Out Updater. From that app, download the apps you want to make them darker and install them. Some apps require having root because you have to flash them via recovery.
This consumes less power
This consumes more power
Explanation
By turning most things dark/black, more pixels in the AMOLED screen will turn off, thus lowering the power consumption caused by the screen.
Remember, this is only for AMOLED screens, IPS/LCD screens will still consume the same power from the battery.
Click to expand...
Click to collapse
Turn Off Auto-Sync LINK
Auto-Sync constantly checks the data on the phone and the data on the cloud, and adds the missing files. In other words, Auto-Sync = wasted battery.
Turn off Auto-Sync
Go to settings, scroll down to you google account, tap it and tap on your gmail. Then uncheck all the items on the list.
This is wrong. Now untick them!
Explanation
Auto-Sync consumes a lot of data and battery. By unchecking the items, Auto-Sync will turn off, and thus saving battery AND data!
Click to expand...
Click to collapse
Turn Off NFC LINK
NFC is wireless, and wireless consumes battery. So turning off NFC will make the battery life slightly better.
NFC off when not needed
If you don't use NFC, go to settings > more > and turn it off. Android beam will grey out because it needs NFC, we don't need that either.
Explanation
NFC consumes a lot of battery if you keep your screen on most of the time. So by turning it off, we're improving battery life while the screen is on.
Click to expand...
Click to collapse
NO Task managers/Hibernators LINK
Yes... I know... Weird right? Don't be misguided, and understand what's happening inside android before doing anything.
Uninstall / Disable Task Managers / Killers / Hibernators
If you have any Task killer, or Task manager apps installed, either disable them if you can, or uninstall them.
Explanation
Android learns the way you use it. It knows which apps you like best and pre-opens them and puts them in RAM so that they get opened faster. Android keeps a log of how much time you've been spending on an app.
By using a Task killer, you're breaking this log, thus preventing Android from learning how you use it. The results?
Android will be loading every app you open from scratch.
Android will get slower.
Android will be wasting battery.
So uninstall those "battery killers" and let Android do the work instead.
Click to expand...
Click to collapse
Use ART LINK
Yes... ART... Not art, but ART... It's an Android 4.4 KitKat specific thing...
What is ART?
ART is a runtime replacement of the Dalvik runtime. It's the way the phone handles apps. Dalvik used to install apps fast, and conserve some space after the installation, but it compiles the app as soon as you open it, and runs it on a Virtual Machine (if it's not a native app).
ART pre-compiles the app on installation, which takes up a little bit (teeny tiny) more space, but makes apps faster to open, and over all performance better.
Switch to ART
Go to settings, developer options, and tap on select runtime, then use ART and reboot. It'll take some time to finish booting the first time it's running ART, but when it's done optimizing apps it'll be worth the wait.
Explanation
ART demands less CPU power to process things over time. It pre-compiles apps just once so that when you open an app, the CPU won't work as much to compile the app just-in-time (JIT). So, less CPU work, less battery consumption, more battery juice, and more performance!
Click to expand...
Click to collapse
Pick the correct charger LINK
I can't put direct links to chargers, so go HERE to the relevant page and see the chargers from there.
Is a fast charger better? or is it the slow one?
Use the Right Charger
A slow charger relaxes the battery, making it last longer when it fully charges. So, for a better battery life, use a slow charger at night when you're sleeping, or when you don't need to charge it quickly.
I recommend using this charger*: it's small, looks good, and it's slow with a 1A power output... Perfect for what we want.
If you're in a hurry, and your phone's battery has little juice left, you may want to charge it pretty quickly. In this situation, you won't care about the relaxation of the battery, so you should use a fast charger.
Something like this charger* should help a lot in achieving what you need. It also has a second slot it you have to charge another device. Use the A slot to charge faster with its 2.4A power.
You can also use a car charger if your phone's battery suddenly dies while you're not home.
This car charger* is perfect because it's fast enough to revive your phone and gives you enough juice to save the day.
So be wise and use the right charger for the right situation, so that you can achieve the best battery life possible.
Click to expand...
Click to collapse
Have a Spare Battery / Power Bank LINK
Sometimes, your battery will die, whatever you do...
Have a Spare Battery
In that case, if you have a phone with removable battery like any current Samsung device, equipping another spare battery could be very useful. If your battery is almost dead, just turn off the phone, open it up, and put your spare battery in. Voila, insta-charge
Have a Battery Bank
One great gadget to own with your phone is a backup power bank. This portable power bank (see link of the page HERE) is awesome because it's universal, and has a 13000 mAh capacity which can charge your phone about 5 times!
So if you don't want to scratch your head to do tweaks, you can use spare batteries or power banks to save the day
Click to expand...
Click to collapse
Know How to Use Android LINK
It's all about how you use it...
We see a lot of users that use Android the wrong way. We see people setting their screen timeout to 30 minutes because "whenever I want to chat, the screen keeps turning off". We also see a lot of users, even devs and power users, constantly pressing the back button to go home.
Know How to Use Android
If you have the screen problem where whenever you want to interact with the screen, it turns off, don't turn the screen timeout up. Turn it down, so that the screen turns off sooner, and saves battery.
And to go home, there's a button for that for a reason! Use it! Pressing back over and over again closes the app, and clears it from your device's RAM. When you re-open the app, it will open from scratch, so your phone will be slower, and will consume more battery since it's using more CPU power.
So use the home button, try to keep as much apps in RAM as possible, stop "clearing all" apps from RAM, and save battery!
Explanation
RAM, either full or empty, consumes the same amount of electricity, unlike RAM in computers.
The CPU copies data from storage to RAM and then runs the app. If the app is already in RAM, the CPU won't reopen it, it'll directly use it.
So making the RAM full of opened apps helps the CPU. The phone becomes faster, and the need of electricity running through the CPU to open the app is now nonexistent.
Also, Android keeps a log of how you use your phone and pre-opens the apps you need. If you constantly kill and clear out apps, you're breaking that log. So when clearing apps, you're not letting Android learn the way you use it. This results in a slower experience, and more battery drain.
Click to expand...
Click to collapse
Deactivate Auto-Rotate LINK
Auto Rotation isn't always needed... right?
Disable Auto Rotation
Go to Settings, Display, Rotation, and turn off Auto-rotate.
Explanation
Auto-rotate uses the phone's G-Sensor to see how you're holding the phone. By turning off Auto Rotation, you're using less hardware, thus using less battery
Click to expand...
Click to collapse
Turn on Airplane Mode LINK
When in low signal places, it's a hassle trying to find that precious signal...
Turn on Airplane Mode
Whenever you feel that the mobile signal is getting too low, turn on airplane mode if you don't need to call someone. Go to settings, More, and check Airplane mode to turn it on.
Explanation
The phone wants you to stay connected to a cell tower whenever possible. On low signal places, the phone will try harder to find a tower to connect to, and that drain a lot of battery. So turning on Airplane Mode makes your phone rest and not search for any tower, thus saving battery.
Click to expand...
Click to collapse
Use a Light Theme for LCD Screens LINK
AMOLED will consume less battery on the dark theme, LCD isn't affected by that...
Use a Light Theme for LCD
Using a lighter theme with more white in it helps your eyes, because you can lower the brightness even more and still see the screen just fine.
Explanation
The lower the brightness, the better the battery life. So a lighter theme is what we want, so we can reduce the brightness and still see everything.
Click to expand...
Click to collapse
Charge You Battery Correctly LINK
It's called a battery cycle, not a quarter of it
Charge it correctly
Don't let your battery go down to 0%, charge it while it's about 50%.
Explanation
No matter what charger you're using (either a slow or a fast one), the battery is greatly affected by the frequency of the charges. Our phones have different batteries than past devices had, so battery life cycles are a bit different as we used to think.
More info here: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
Use Widgets with Manual Refresh LINK
Widgets update themselves a lot... but there's a solution for that.
Use Manual Refreshed Widgets
Check every widget you have, and see whether you can set it to refresh whenever you click on it, or do something to refresh it.
Explanation
Auto-refreshing widgets make the phone wake up a lot and do some processing which can use the battery. By making them manual, you are controlling the frequency of the refreshes, and you are forbidding the widgets to refresh while the phone is asleep.
Click to expand...
Click to collapse
Do Not Rely On Battery Discharge Rate LINK
Look! Left it overnight and only lost 2%! This is about 0.25%/hr!
WRONG!
The battery acts like a capacitor (not exactly like it, but very similar to it), so whenever its charge is changed, the discharge / charge rate will change with it.
So, if you leave your phone overnight at 100%, you'll get a rate of x%/hr. If you leave it at 50%, you'll get a rate of y%/hr where x and y are very different.
It's only a matter of experimenting where is the sweet spot of battery percentage that you should have when keeping it overnight.
Click to expand...
Click to collapse
Do Not Wipe Battery Stats LINK
Some people do that a lot... but why?
What's Battery Stats?
Battery stats is basically a file in Android that stores the battery history. The longer the battery stats is, the more accurate the battery percentage reading is.
Why not wipe it?
Wiping battery stats is like tinkering with the fuel gauge in your car: you won't get more gas if you glue the gauge's needle at Full.
The problem is that wiping battery stats will give you wrong readings. Users thought that wiping it will make the battery "hold the charge better". This is wrong because doing so will break Android's battery reading, and that's why it will show you a higher percentage for a longer time.
Click to expand...
Click to collapse
Do Not Buy Cheap Batteries LINK
Wow! A 2500 mAh battery for my Galaxy Ace! And the same size of the original!
The problem here is that some users order a battery with a higher mAh value for a very low price. They get their 2500 mAh battery and put it in the phone. The device would last a lot longer now before its battery dies.
Now let's not forget why they ordered such a battery. It's most probably because their old battery is just exhausted and isn't lasting much. So no matter what battery they get, they'll notice a big difference in battery life.
Usually these cheap batteries are advertised as 2500 mAh, while they're actually a lot less.
So if you want to replace your old battery, try getting an original one.
Click to expand...
Click to collapse
Thanks to all of you who gave me more ideas on how to achieve better battery life
Medium​
Undervolt LINK
The CPU is the biggest battery consumer, and it needs voltage from the battery. If we decrease that, we'll gain some battery life.
Undervolt your CPU
Assuming you have TricksterMOD, launch it and go to the specific window. Scroll down to CPU Voltages, then click Profile, and save the Profile as Default.
Now hit the minus/plus button right above where it now says "Default". When the window pops up, hit the minus button JUST ONCE. Every time you hit the minus button you undervolt by 12500 mV, and we'll call that a "step"; so undervolt by one step.
Hit the check mark button to apply.
Explanation
Every time you undervolt by a step, the CPU will demand less and less from the battery to run. This improves the battery by just a bit. It's mainly to avoid temperature throttling, but it also improves battery.
Click to expand...
Click to collapse
Increasing SD card Read-Ahead Value LINK
Whether or not you have an SD card, this helps...
Increase readahead Value
Go to TricksterMOD, swipe to general, and click Read Ahead Buffer Size under the I/O Control section. Set it to 3072 (Value is in KB, so it's 3MB)
Explanation
The bigger the read-ahead buffer is, the better the SDcard can predict what command would come next. It prepares itself to do a command before it's even issued. This gives you better performance, and a potential increase of battery life because generating 3MB is nothing compared to the performance benefit.
Check out this Spreadsheet from broodplank.net for more info on the benefits of read-ahead.
Click to expand...
Click to collapse
Advanced​
Underclocking LINK
One major battery drainer is the CPU, so if you don't really use the phone much, and you don't care about games, you should probably consider underclocking it to get that precious juice back.
Requirements
You must be rooted and have a kernel that supports overclocking. You may find out how to root by doing a little online research because every device has its own rooting method (for example, I wrote a fully detailed guide on how to root your Nexus 4).
CPU Underclocking
Warning: Underclocking the CPU too much could result in an SOD (Sleep Of Death) which makes the phone sleep and not turn on without pulling the battery.
First of all, we need a controller, or a daemon to control the CPU's clock speeds. So go ahead and download TricksterMOD from the Play store, we'll be using that to underclock the CPU.
Now enter it and grant su permissions, swipe from left to right and select the general menu, scroll down to CPU frequency control and tick frequency lock, then click on the number next to the min button, and choose the smallest number in the list.
Then, click on the number next to the max button and choose something a little less than you CPU's stock frequency... on a Nexus 4, the stock frequency is 1.5 GHz (or 1512000) so I picked 1.2 GHz (or 1242000).
Now swipe down to CPU Governor Control and click the button next to the Governor Button, and select conservative. If you don't have conservative in the list, pick ondemand. Now hit the check mark button at the top of the app to apply the settings.
Explanation
We are lowering the CPU's clock speed which makes it a little slower, but consumes much less battery. We are also changing the way the frequencies are handled: with the conservative governor, the CPU will prefer staying at lower frequencies.
MP Decision
We're not done yet, swipe again from left to right and click specific, then look for MP Decision. If it's there, turn it off, if not then it's probably already off. Hit the check mark to apply the settings.
Explanation
MP Decision sees how you use the phone, and clocks the CPU relatively (if you're just chatting, it'll underclock. If you're playing games, it'll clock it to normal). We don't want that since we want to force underclock the CPU, so we turn this off to prevent it from playing with our settings.
GPU Underclocking
On that same screen, scroll down to GPU max frequency, and lower that just one step below the default clockspeed (400 MHz being the stock frequency on the Nexus 4, so let's set that to 320 MHz). Don't forget to hit the check mark button to apply the changes you've made.
Explanation
The GPU draws almost everything you see on the screen, so it's always active. Lowering its frequency has a big positive impact on battery life, which is what we want.
So that's basically it for the underclocking part, have fun playing with different governors and frequencies to get that precious Performance/Battery life point.
Click to expand...
Click to collapse
Detecting Wakelocks VS Installing Battery Saving Apps LINK
The most cliche thing to do when your battery doesn't last a day is install a battery saver app. However, I don't do it myself. I prefer detecting wakelocks in order to reduce battery consumption.
What is a Wakelock?
A wakelock is the moment where you turn the screen off, but the CPU stays awake doing something. It is the phenomenon when the CPU isn't asleep when the screen is off and it shouldn't be doing anything. Wakelocks usually drain battery because the CPU is kept awake and working while it should be resting.
Detecting a Wakelock
To detect a wakelock, install Wakelock Detector. Charge your phone, then unplug it and leave it with the screen turned off for about an hour or two. Then open the app and check the list of wakelocks.
The bigger the red bar on the top, the longer the wakelocks are. The top app is the number 1 culprit, and should be removed. If the top app is Google Services, it's probably the Location issue. If it's another app, check if there are syncing issues, and try making the sync interval a little longer, or turn off its notifications.
Explanation
We're trying to minimize the wakelocks caused by some apps to prevent the phone from being awakened. By doing that, we let the phone go to deep sleep faster, and longer. So, more battery life for us!
Another way to detect wakelocks (a little more pro)
Download and install betterbatterystats. It's basically a more pro version of Wakelock Detector. It also needs root for some functionality to work, but it gives you a more in-depth info about the wakelocks, CPU states, and network usage.
msm_hsic_host is the 3G... not to worry about that
So that's it for the wakelocks! Keep testing with different app configurations to achieve the best deep sleep mode for your phone, and get the most out of your battery.
Click to expand...
Click to collapse
Undervolt Even More! LINK
Undervolting once is fine. Undervolting twice is better. But undervolting a million times isn't good... So let's undervolt as much as we can.
Download Stability Test, run it, and hit the Scaling Stability Test button (root will be needed). Wait about 8 to 10 minutes while it's doing the process. If it doesn't crash, stop it by pressing the back button. Your phone is stable, you can undervolt even more.
So go to TricksterMOD and undervolt another step (remember to save a profile indicating how many steps you've undervolted). Then test again using stability test....
Keep doing that until something bad happens like the app crashing, or Android itself rebooting. When it does crash, "overvolt" back one step. At this point your CPU is running good while on the lowest voltage.
Explanation
Every time we undervolt by a step, we test the stability of the CPU so it doesn't crash. When it crashes, we overvolt back to the last voltage set that was stable, so that we get the lowest voltages our CPU can handle without going crazy, and thus, getting that slight push of the battery life.
Click to expand...
Click to collapse
Tweak Kernel Governors / Schedulers / KSM LINK
These tweaks only apply to certain kernels, since not all kernels allow you to modify these settings.
Governor, Schedulers, and KSM Tweaks
If you have a kernel tweaking app like tricksterMOD or faux clock, you are 90% free of all trouble of tweaking kernel governors.
First, find a kernel that has a specific and optimized governor. Turn off MPDecision if the kernel has an alternative (anything like "Intelli-Plug" will do). Now let's tweak!
We cannot cover the options for every kernel and every governor in the universe since each one has its own options and settings.
I am currently using faux kernel on my device. This kernel has intellidemand as the optimized governor. The aim of the kernel dev was to replace MPDecision with something better.
The links below provide some info about that kernel. These settings include tweaking the governor, schedulers and the KSM:
http://forum.xda-developers.com/nex...ernel-ver-031-mako-kk-4-4-uv-otg-cpu-t2008222 (the second post shows the recommended settings for faux kernel)
https://plus.google.com/+PaulReioux/posts/WFcjPqMEZgJ
Have fun tweaking!
Click to expand...
Click to collapse
Great guide, and great usage of your 2000th post! I've featured this on the XDA Portal
Great post!
I like using Screebl to prevent screen turning off and on unnecessarily. And use One Power Guard by onexuan. It really lessens the drain over night. I use Condi to automatically disable mobile data when connected to wifi at home as well.
very great guide! Just note something for people with HTC Sense. If you use the weather clock with current sensor, setting the location to GPS only will disable the location service (even if it's seems on, the widget will say it's off since it doesn't want to use the GPS). Because of that, you loose that feature if you do that.
Um, there's a problem with this guide. Instead of underclocking, overclock the processor. The faster the processor, the faster it gets jobs done, the faster it can go to sleep. These reduces long wakelocks and in general improves battery life.
I used to think the same way, but thinking that way is false.
What about Greenify?
idk about you, but greenify is useful.
EDIT: And for the fast charge/slow charge, do you have any proof?
Beatsleigher said:
Um, there's a problem with this guide. Instead of underclocking, overclock the processor. The faster the processor, the faster it gets jobs done, the faster it can go to sleep. These reduces long wakelocks and in general battery life.
I used to think the same way, but thinking that way is false.
Click to expand...
Click to collapse
So you're saying that it's better not to underclock and just use default values?
Hmm kind of skeptical about the home button thing. I usually back out of an app to prevent it from running in the background and consuming battery. Can anyone comment on this?
fredrick1213 said:
Hmm kind of skeptical about the home button thing. I usually back out of an app to prevent it from running in the background and consuming battery. Can anyone comment on this?
Click to expand...
Click to collapse
the fact that the app opens from scratch again makes the CPU work more and thus using more battery
if it's kept in the RAM, it'll stay paused, it won't use the CPU and makes your phone faster sincr it resumes the app, thus making your battery usage less.
Sent from my Nexus 4
Riro Zizo said:
the fact that the app opens from scratch again makes the CPU work more and thus using more battery
if it's kept in the RAM, it'll stay paused, it won't use the CPU and makes your phone faster sincr it resumes the app, thus making your battery usage less.
Sent from my Nexus 4
Click to expand...
Click to collapse
So if using Greenify, which automatically hibernates apps and greatly increases my battery life btw, will it make pressing the home button useless?
Beatsleigher said:
Um, there's a problem with this guide. Instead of underclocking, overclock the processor. The faster the processor, the faster it gets jobs done, the faster it can go to sleep. These reduces long wakelocks and in general improves battery life.
I used to think the same way, but thinking that way is false.
Click to expand...
Click to collapse
you have a point if the user is a heavy user. But for normal users, the CPU won't be doing much; so underclocking it won't affect time, but it greatly improves battery life.
steakhutzeee said:
What about Greenify?
Click to expand...
Click to collapse
pham818 said:
idk about you, but greenify is useful.
EDIT: And for the fast charge/slow charge, do you have any proof?
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Click to collapse
greenify freezes the app if you're not using it, so the phone will start it from scratch... it's a good app if you use it on apps that you barely use, but don't greenify the apps that you use frequently, it will badly affect your battery life.
as for the fast/slow charge, I have no proof since this is what i usually have as a personal experience, but i find out that my battery lasts longer when i charge it slower...
Sent from my Nexus 4
fredrick1213 said:
So if using Greenify, which automatically hibernates apps and greatly increases my battery life btw, will it make pressing the home button useless?
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if for example you greenify whatsapp, and you press home while you were inside whatsapp... yes... it's useless...
but try building the habit of pressing it, the back button kills the apps, we don't want that
Sent from my Nexus 4
i always clear all my apps before i put the phone to sleep.
i'll try to not clear apps anymore, and see how that works.
thanks
pham818 said:
i always clear all my apps before i put the phone to sleep.
i'll try to not clear apps anymore, and see how that works.
thanks
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ah, you see, here's where it does make the good difference, keep doing that because you won't use the apps for about 8 hours, so it's better if they're closed.
i just posted this because i see people constantly closong the apps that they always use, but if you're not using the apps much (like when sleeping) it's better to kill them
Sent from my Nexus 4
Great post, love all of the tips. Keep up the good work. I hope to see 2000 more posts to come.
aguilar8788 said:
Great post, love all of the tips. Keep up the good work. I hope to see 2000 more posts to come.
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oh you will, trust me
every 1k posts I'll make something very special.
my 1000th post was releasing 2 very annoying apps that the portal newswriters denied them for being too annoying
Sent from my Nexus 4
First of all thanks! battery life is a never ending issue in any smartphone using the no animations, less widgets and device only location... hope it'll prove useful
I got a question... I use go power master which has a "screen off optimization" and i noticed that my battery barely drains itself while the phone is idle... it's not what you count as a task killer right?

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