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Hi guys i finally managed how to root a s2 duo the dramatic battery life.
I installed the Setcpu and underclocked my s2.
But it only makes 10 hour or even less. My brother has also a S2 and his battery life goes like 2 and a half day without root just a stock rom. He uses his s2 only to whatsapp and internet browsing like hell just like me. And his batttery life is 2 days
My question how do i get that battery life like 2 days, its really annoying charging the s2 when you want go outside with a low battery.
I got also screenshot of my S2 setting and info:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
PS: My brothers display percent is also like 50 precent like me.
(Sorry for bad english)
so your brother uses his phone to whatsapp and browsing only?
you must be doing so much more stuff to manage to drain it in 10 hours....hell even i get 1d 12hours at least with my ICS rom
also how does he do the whatsapp thing? via 3g or wifi
we need so much more details in order to give you a decent help
the amount of apps/widgets also decrease/increase ur battery life
Download betterbatterystats and check if your phone goes in to deep sleep..
Otherwise you might have some app or something else keeping it awake all the time even if the display is off.
RorixRebel said:
so your brother uses his phone to whatsapp and browsing only?
you must be doing so much more stuff to manage to drain it in 10 hours....hell even i get 1d 12hours at least with my ICS rom
also how does he do the whatsapp thing? via 3g or wifi
we need so much more details in order to give you a decent help
the amount of apps/widgets also decrease/increase ur battery life
Click to expand...
Click to collapse
From my experience, 3G is the battery killer. When I am on 3g network I get 9 hours until the phone shuts down. THis is with email checking when it is pushed ( 20-30 messages) and about 15 minute of calls and random 4sq check ins.
When I am on GSM only, connected to EDGE rather than 3g i get a bout 1.5 days with a lot greater use.
If I am at home all day and stay connected on wi-fi, I seem to get the best battery usage.
Coming from a BlackBerry this is a bit strange as the Wi fi was the one that used to drain the battery.
My brother uses his s2 always on the wifi and outside of course the 3g signal.
semitor said:
Download betterbatterystats and check if your phone goes in to deep sleep..
Otherwise you might have some app or something else keeping it awake all the time even if the display is off.
Click to expand...
Click to collapse
I just installed betterbatterystats how can i check it if it goes too deep sleep
Check the thread in my signature. 3d battery life! Always in wifi and in 3g (or 2g if i need only whatsapp/mail).
Pako010 said:
I just installed betterbatterystats how can i check it if it goes too deep sleep
Click to expand...
Click to collapse
for checking that i recommend cpuspy much easier to verify if your phone goes to deep sleep
in BBS verify the partial wakelocks and let us know whats in the top 3 positions
and how many counts that activity contains
RorixRebel said:
for checking that i recommend cpuspy much easier to verify if your phone goes to deep sleep
in BBS verify the partial wakelocks and let us know whats in the top 3 positions
and how many counts that activity contains
Click to expand...
Click to collapse
The app is showing this infoo
Hi,
You could try a different rom aswell, there is quit some difference on battery life for the different roms out there.
Bade90 said:
Check the thread in my signature. 3d battery life! Always in wifi and in 3g (or 2g if i need only whatsapp/mail).
Click to expand...
Click to collapse
Thxx my s2 using the 100mhz more than the 500 and alsoo configurated to the info of the topic.
i use siyah kernel and voltage controle
lol the lulzcrative setting is wonderfull
Everybody thnx it sure helped to my battery drain. I flashed the kernel to the latest siyah version avaiable and then i installed voltage control and 2nd core app. And folowed the instruction topic of voltage control. Everybody thnxxx a lot.
Hi everyone
my battery never hold me a day without charging it
I use wanamlite rom 2.3.6
please how can i improve the battery life
when I am on gprs connection and the speed is slow about 10 to 25 kb/s
browsing by opera mini 2 to 4max total browsing ,usuing what's app, messaging via go sms about 100 sms send and receive,
and some othet things is that normal.
Hi everyone
my battery never hold me a day without charging it
I use wanamlite rom 2.3.6
please how can i improve the battery life
when I am on gprs connection and the speed is slow about 10 to 25 kb/s
browsing by opera mini 2 to 4max total browsing ,usuing what's app, messaging via go sms about 100 sms send and receive,
and some othet things is that normal.
Click to expand...
Click to collapse
Hi. This is rather long and I wasn't prepared as I wrote but just simply went on with every thought. Skipping to the summary, where the bold text is, is useful for the majority of people and the entire post is intended for new people though there are some things I haven't yet seen discussed here.
I was actually reading the whole thread which dates back a bit rather slowly and wanted to give some of my experience with my battery.
First off, it seems pretty typical that when a phone is struggling to keep a connection or when there's a lot of fluctuation on 3G, then battery suffers. This was something that was really apparent for me on the SGS2 since I could more easily isolate that one issue and have a look. At the same time, though, I've found that after switching to a good solid provider in my area, who has a consistency of signal and an abundance of towers etc etc, that it made far less difference than prior if I was on 3G or 2G. I think that its actually now negligible and although I haven't tested being on 2G alone since I no longer need to, I suspect that the battery savings isn't going to effect me personally as I keep full bars or close to it most of the time now. If I go back to the previous carrier then of course it would and I'd have the same problem all over again and would be pissed off and keeping myself restricted to GSM, which sucks.
Another thing that I've found, is that every phone really must be uniquely different when it comes to undervolting, setting the governer, and even more specifically just using a custom kernel opposed to a stock kernel, or for root and CWM, one that's compiled as stock with the root goodies added by Chainfire.
I really should break this into 2 separate things.
To simplify the last paragraph, its commonplace, for example with intel or AMD processors that they might all get the same production line process but that there's such a narrow margin for error, that what's deemed acceptable for various speeds and voltages are then labeled as differant processors when they go to market, so the 3 ghz version of a processor is often the same factory result as the 1.5 ghz version and there just happened to be limitations put on the 1.5 ghz version afterward so that it simply could not go any faster as it wasn't the best batch of cookies to come out of the oven, or perhaps the L2 or L3 cache didn't turn out on one batch so part of the thing gets zapped off by a laser and marketed under a differant name.
Getting to the point, there's a lot of custom kernels and various threads about how to get the most out of these kernels. For some people this is the gold nugget but in my case it happens to be that if I want to be rooted and have the best power management while pulling adequate benchmarking numbers then the smartest thing I can do is just stick with the kernel that matches my phone that Chainfire has compiled. As I understand it he uses the same configuration file and complier options as Samsung (or gets as close as he can to it), and adds the components needed for the rooting process.
Since I'm not very smart, and have tried to save battery using Siyah various times with various settings of my own and posted by other people, only to find that my phone's personal temperment is to drain faster, I still continue to try other things and most recently the Red Pill kernel.
While trying a variety of settings with Red Pill last night and benchmarking over and over again, I found that quite simply there's a lot going on which effects the performance of the benchmark score, but even more importantly, and this took a while to notice, that undervolting to levels that didn't by any means cause crashes did not mean better battery or better benchmarks. Where it did benchmark better I found that in my case there can be a huge placebo effect because the in between scores aren't getting looked at as much, for example if I undervolt too much at 500 800 and 1000 then my phone tends to not even use those steps as much and the obvious result of this is going to be too much jumping straight from 200 to 1200 even if I'm just screwing around and flicking the home screens back and forth. This obviously will not save battery. Further to that, I felt that although the GPU can handle a larger undervolt at both settings and a larger undervolt at the lower one, that my phone's performance was much better when both of those things had less of a gap, both in speed and in voltage and went less aggressively there as well. I still have the Red Pill kernel installed and think I have reasonable values however it took quite a lot of testing, hours of it, and the jury is still out and for the most important reason as it applies to my phone which is as follows:
When I first got the phone there was a lot of talk about calibrating the battery. There's apps that will wipe a file (yes I know this is very repetitive for a lot of people but I'm writing it for those that are new) that has to do with battery calibration. You can also do it from recovery in CWM. The file will also get wiped sometimes by something you flash, for example cleaning scripts, some kernel installs might do this (I'm not sure if its wise or necissary when using a new kernel or ROM; I leave mine alone now unless something else does it).
I spent a lot of time trying to get better battery life by calibrating my battery the "proper" way, when it was completely charged, and even when it was just about to die entirely. This has always been not only fruitless, but counterproductive. I've read that the file gets deleted automatically when the battery is full and the power cable is unplugged but I'm skeptical about that as I've found that I get quite noticeably better (significant in my case) battery life when I leave it alone and let it do its own thing for at least 3 charges. That doesn't mean discharging it entirely 3 times, but that just using it as normal a few times brings it into its own all by itself. Calibrating the battery seems (to me) to actually screw this up which means another few times of use before I'm even with a clue of how a kernel (new ROM or custom kernel) is going to be on the battery.
To summarize my experience:
- Custom Kernels appear great for some people but every chip on every phone is differant. In my case sticking close to stock has been the way to go. The best I have so far done is adjusted the conservative governor to be a little snappier than default. I quite honestly got very irritated at one point at all the kernels that pop up and all the settings threads because I expected that I was going to have the same experience as other people were reporting.
- Undervolting sounds effective in theory, but its important to look at how your phone uses various frequencies according to your habits and make sure you haven't fallen into a sitiuation similar to mine where undervolting resulted in me skipping up a frequency to quickly and thus using more power. Additionally, reducing the gap between my voltage values and the gap in the frequencies I had created with my GPU settings resulted in better performance and specifically less work for the CPU.
- Battery Calibration may or may not have its place when it comes to new ROMs or Kernels (I don't know), but Calibration in general is not something the phone requires and further to that (in my observation) just makes it drain faster for a few recharges. The longer I don't calibrate it, the better.
I was at one time not pulling a full day out of my phone. Today, admittedly with the samsung 2000 mah extendable battery though, which is 20% more juice, I can pull 24 hours (as a low number to use) with 5 hours of screen time (also a low number; its more like 6 hours screen and more than 24 hours but varies depending upon how I've used it). When I first got the thing I was calibrating a lot and 5 hours of screen time I don't think would have been possible at all. If you think your phone is a lemon, you may very well just need some patients with it. I have had my original battery in it and using it more patiently as well, and although it wasn't long enough to give out accurate numbers I knew that it would have been just fine had I had to continue using the original battery.
One last thing, I typically freeze wifi sharing and Samsung's email and so forth but have noticed in more recent ROMs that these additions are getting to be more and more negligible. I would unfreeze wifi sharing if I thought I would ever use it.
A final thought for benchmarking is to look carefully at how you use your phone first, in respect to what voltages are used most often, then adjusting each frequency individually. If I undervolt too much at my top frequency then the phone doesn't crash, but it also doesn't score as well. It may be better to find the ideal spot by doing each frequency seprately and individually, then worrying about how things scale, as previously mentioned.
I've found that I get quite noticeably better (significant in my case) battery life when I leave it alone and let it do its own thing for at least 3 charges. That doesn't mean discharging it entirely 3 times, but that just using it as normal a few times brings it into its own all by itself.
That is the correct method battery recalibrates itself .The stats play no part in the calibration process or how long a battery lasts .
https://plus.google.com/u/0/1050519...dVxPT#105051985738280261832/posts/FV3LVtdVxPT
jje
Hello,
I'm an happy X10 owner since November 2010. Since then my phone has been intensively used. Hundreds of ROM changes, daily use. It has been charged everyday.Now I'm on Donout HD2, with unlocked bootloader without overclocking. After all this time the battery life gone crazy. For e.g. I'm not able to watch one movie because after one hour the battery is almost empty (on lowest brightness). I remember that ~1/2 Year ago I was able to watch a whole movie and the battery was more than 60% left (I'm using MX Player). It's weird, specially because my brother uses the same video player and his battery usage is below 10% after whole movie(SGS II). There is also weird thing that the phone is doing> After I use it intensively and turn off the screen and leave it for some time the battry gets loaded (+ 1-15%). The problem exists only when I have screen turned on (battery gets very warm). Today I've watched Youtube for ~15min (using WIFI) and I had to stop it, because the battery got from 45% to 15%. Of course I have some programs running in the background (musicXmatch,ProximityScreenOff,Program TV,Profile Settings, Equalizer, Flip and Sleep, Clipper, Missed Reminder, KeepScreen, Callrecorder, Setxperia, BlingBoard, Thumb Keyboard + system processes).
So my question is:
-Is the ROM wrong (I don't think so)
-Some of the processes need more energy
-Is the battery old and I should replace it with a new one (That's what I'm thinking of)
Please share Your experience & suggestions.
Hi,
how many empty RAM do you have when phone boots up?
Also try installing CPUspy and run it for a day, an you will show how is phone under pressure. Also install CPUMaster, maybe changing CPU governor will help.
Main power comsumption is form CPU and display. I also have set it on one of the lowest levels, because of durability.
I had tried about ten different ROMs (dont count many versions of each one); but in most of them I observed little bigger power consumption then on my current. I chose Wolfbreak gaming and cleaned junk apps (more then he did ) and got great battery performance - about 2 - 3 days with standart usage, 1,5 day with high pressure.
"Problem" is caused only when screen is on because CPU is awake, but when screen off CPU automatically goes into deep sleep mode with tiny consumption
But in you case, install CPUspy, report it here and try to cut off some junk apps - there are a lot of them in any rom...
HeliumX10 said:
Hi,
how many empty RAM do you have when phone boots up?
Also try installing CPUspy and run it for a day, an you will show how is phone under pressure. Also install CPUMaster, maybe changing CPU governor will help.
Main power comsumption is form CPU and display. I also have set it on one of the lowest levels, because of durability.
I had tried about ten different ROMs (dont count many versions of each one); but in most of them I observed little bigger power consumption then on my current. I chose Wolfbreak gaming and cleaned junk apps (more then he did ) and got great battery performance - about 2 - 3 days with standart usage, 1,5 day with high pressure.
"Problem" is caused only when screen is on because CPU is awake, but when screen off CPU automatically goes into deep sleep mode with tiny consumption
But in you case, install CPUspy, report it here and try to cut off some junk apps - there are a lot of them in any rom...
Click to expand...
Click to collapse
Thanks, I'll try Your advice. Can You say how old is Your batt? Oh, and my RAM free is about 100MB
jakuburban said:
Thanks, I'll try Your advice. Can You say how old is Your batt? Oh, and my RAM free is about 100MB
Click to expand...
Click to collapse
My phone is form january 2011, so relatively new...
OK, see that you have a lot of software on backround - i mostly have 160-170MB on startup and about 120-130 MB after few days ...
jakuburban said:
Hello,
I'm an happy X10 owner since November 2010. Since then my phone has been intensively used. Hundreds of ROM changes, daily use. It has been charged everyday.Now I'm on Donout HD2, with unlocked bootloader without overclocking. After all this time the battery life gone crazy. For e.g. I'm not able to watch one movie because after one hour the battery is almost empty (on lowest brightness). I remember that ~1/2 Year ago I was able to watch a whole movie and the battery was more than 60% left (I'm using MX Player). It's weird, specially because my brother uses the same video player and his battery usage is below 10% after whole movie(SGS II). There is also weird thing that the phone is doing> After I use it intensively and turn off the screen and leave it for some time the battry gets loaded (+ 1-15%). The problem exists only when I have screen turned on (battery gets very warm). Today I've watched Youtube for ~15min (using WIFI) and I had to stop it, because the battery got from 45% to 15%. Of course I have some programs running in the background (musicXmatch,ProximityScreenOff,Program TV,Profile Settings, Equalizer, Flip and Sleep, Clipper, Missed Reminder, KeepScreen, Callrecorder, Setxperia, BlingBoard, Thumb Keyboard + system processes).
So my question is:
-Is the ROM wrong (I don't think so)
-Some of the processes need more energy
-Is the battery old and I should replace it with a new one (That's what I'm thinking of)
Please share Your experience & suggestions.
Click to expand...
Click to collapse
Same here mate. My phone is even older than yours. I got mine in June 2010 - so nearly 2 years old. I didnt change ROM's till 3 months back (only changed 3-4 times till now, am on X10S now). Dont use phone for anything other than calls, chatting on gtalk, whatsapp etc. That too not too much. But yes, battery has deteriorated like crazy. *Battery loses 1% for every minute screen is on*. mind you, this is on 40% brightness with auto brightness turned off. Only data connection on, bluetooth, wifi, gps turned off.
I wouldnt say i have really used my phone a lot. So battery deterioration is really weird. I have always had a doubt about the FPS Uncap, that it causes the screen to draw lot more power than when FPS was capped (i am assuming the FPS at 55 is achieved at a higher refresh rate than when FPS was capped at 30). I couldnt find any script to turn the FPS cap back on so that i could test this. so cant say for sure.
battery does the "back from the dead" trick on me too. Playing a game like PES, Fifa etc., sometimes phone dies when battery was still 22-23%. Then restart the phone and it stays on for 2 odd hours. Start game again, and it dies within minutes again. Once it went to 0% while playing a game. I tried to switch it on, it did.. and i left it as it is... after 30 minutes, i check the phone, battery has crawled back to 31%!! and then it stays on for nearly 4 hours after that.
Basically, the battery can go on for 1 day or slightly more on standby... but if u use the phone (duh!), its kaput.
takmayo said:
Same here mate. My phone is even older than yours. I got mine in June 2010 - so nearly 2 years old. I didnt change ROM's till 3 months back (only changed 3-4 times till now, am on X10S now). Dont use phone for anything other than calls, chatting on gtalk, whatsapp etc. That too not too much. But yes, battery has deteriorated like crazy. *Battery loses 1% for every minute screen is on*. mind you, this is on 40% brightness with auto brightness turned off. Only data connection on, bluetooth, wifi, gps turned off.
I wouldnt say i have really used my phone a lot. So battery deterioration is really weird. I have always had a doubt about the FPS Uncap, that it causes the screen to draw lot more power than when FPS was capped (i am assuming the FPS at 55 is achieved at a higher refresh rate than when FPS was capped at 30). I couldnt find any script to turn the FPS cap back on so that i could test this. so cant say for sure.
battery does the "back from the dead" trick on me too. Playing a game like PES, Fifa etc., sometimes phone dies when battery was still 22-23%. Then restart the phone and it stays on for 2 odd hours. Start game again, and it dies within minutes again. Once it went to 0% while playing a game. I tried to switch it on, it did.. and i left it as it is... after 30 minutes, i check the phone, battery has crawled back to 31%!! and then it stays on for nearly 4 hours after that.
Basically, the battery can go on for 1 day or slightly more on standby... but if u use the phone (duh!), its kaput.
Click to expand...
Click to collapse
Your battery seems to have other problem - needs to be recalibrated. In worse it needs to be replaced.
But firstly try things I have described above for jakuburban, it might help also.
Good luck!
HeliumX10 said:
Your battery seems to have other problem - needs to be recalibrated. In worse it needs to be replaced.
But firstly try things I have described above for jakuburban, it might help also.
Good luck!
Click to expand...
Click to collapse
Yes, I'll try all of them. I've set the CPU usage to ondemand (like I always had) and noticed one thing.
Whenever the screen gets on the CPU freq. gets to maximum (only when screen was on, doing nothing)
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"lightbox_share": "Share",
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And only after I turn off the screen it looks like that
That means that the CPU freq. is Maximum or minimum, nothing between that (rarely).
I'll provide more snapshots after longer usage
to jakuburban:
Wow, he we got it! Phone is on max frequency as possible all the time!
Also I cant see the deep sleep - could you test this:
- open CPUspy, tap form menu Reset timers
- use some task killer, kill all the application
- turn off the phone (not shutdown, only to disable screen) and leave it for few minutes
- after that turn on the phone and look into CPUspy if deep sleep was active. If not, we have second problem.
To fix it, do you have unlocked bootloader or you have custom kernel with standart bypass method?
BTW.: Wow, I am now the senior member ! I am getting older faster, than I thought
HeliumX10 said:
to jakuburban:
Wow, he we got it! Phone is on max frequency as possible all the time!
Also I cant see the deep sleep - could you test this:
- open CPUspy, tap form menu Reset timers
- use some task killer, kill all the application
- turn off the phone (not shutdown, only to disable screen) and leave it for few minutes
- after that turn on the phone and look into CPUspy if deep sleep was active. If not, we have second problem.
To fix it, do you have unlocked bootloader or you have custom kernel with standart bypass method?
BTW.: Wow, I am now the senior member ! I am getting older faster, than I thought
Click to expand...
Click to collapse
So here is Your answer. I've changed my kernel to DooMLorD and everything works better
Nice to sse that it is solved
Also recommend to change CPU governor to "interactive" - its the best between almost nolags in eg. movies and apps and wit acceptable battery consumption. But not sure if it is includedin this doomkernel,so simply look into CpuMaster and give a try
"ondemand" governor has more battery drain in most roms.
HeliumX10 said:
Nice to sse that it is solved
Also recommend to change CPU governor to "interactive" - its the best between almost nolags in eg. movies and apps and wit acceptable battery consumption. But not sure if it is includedin this doomkernel,so simply look into CpuMaster and give a try
"ondemand" governor has more battery drain in most roms.
Click to expand...
Click to collapse
OK, set. I'll give it a try and report back after few days how the battery life has changed.
jakuburban said:
OK, set. I'll give it a try and report back after few days how the battery life has changed.
Click to expand...
Click to collapse
OK, the battery seems better. I've been using my phone all day long browsing the Internet and it was still more than 50% of battery.
Thanks guys, after changing to interactive i had the perfect combination of no lag and battery life! Thank you!
Since i see a lot of ranting going over the battery life again, i thought it would be appropriate to share this.
So after noticing how much of a difference people get in their battery lives, I've decided to do some research and make a guide-line that will give us all we need to know about properly using our batteries. First part is a general information and usage techniques for LIBs, second part is taken from Google materials on Android-powered devices (G1, Magic, Droid, Nexus One, etc).
Sources:
Wikipedia - http://en.wikipedia.org/wiki/Lithium-ion_battery
BatteryUniversity - http://www.batteryuniversity.com/parttwo-34.htm
Google IO Conference 2009 - http://www.youtube.com/watch?v=OUemfrKe65c
Electropaedia - http://www.mpoweruk.com/life.htm
General Lithium-Ion Battery (LIB) Usage:
• Discharging your LIB fully (or less than 2.4 Volt per cell) is bad for the battery. Every time you do that, it can be said that small part of your battery (some cells) dies (they forever lose their charge). Do not store your batteries depleted, there's a high chance they will die completely or will become very "weak".
• You cannot restore bad LIBs by overloading/heating/praying. You gotta go buy a new one. They DO degrade overtime, some cells naturally lose the ability to gain/give electricity.
• Although it is said that LIBs do not have memory, it's not entirely true. LIBs have gauges that monitor performance of cells, and if you do a lot of small charges, it won't let those gauges to monitor a full battery potential, causing an invalid indication of charge level. A complete charge/discharge should be made when battery capacity seems reduced, that will calibrate gauges and they will provide your phone with correct charge level status. A full charge/discharge cycle should be done every 30 (or so) partial charges.
• LIBs have a shelf-life. Do not buy them to store them. Use them early, use them often, they will die whether you use them or not. Do not buy LIBs to use them in 6 months/year/etc, buy them right before actually using them.
• LIBs have short lives (in comparison to NiCa batteries, etc). You should expect to buy a new battery in 2-3 years after being manufactured. It is caused by internal oxidation and there's nothing you can do to stop or prevent that.
• Worst LIB treatment is to keep it at 100% charge level at high temperature (think laptop/phone under direct sunlight, like car dashboard).
• Best LIB treatment, or LIBs "favorite" charge level - 40%. That's also the usual charge level you buy them with.
• LIBs don't like heat. For example, while always at 100%, typical LIB in a laptop, at temperatures of 25C (77F) will lose 20% (twenty percent!) of full capacity per year. That capacity loss is reduced to 6% (six percent) at 0C (32F), and increased to 35% loss at 40C (104F). So, keep them cool (LIBs like fridges), don't let your devices sit in the sun or overheat at charge. Also, keep in mind that while in use, battery will be significantly hotter than phone/outside environment
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• LIBs like frequent partial charges/discharges more than they like full charges/discharges.
General Android power usage advice from google:
• Although this part is somewhat controversial, they do recommend having a complete, full FIRST charge to be made. If time allows, a preferred time for the first charge is 12 hours. This may have more to do with the OS than the battery.
• Battery on a Android device, in average, will last about a full day with normal use (some videos, mail, calls). That's what you should kind-of expect.
• Speaking in averages, "idling" 3G/EDGE connection (when phone is sleeping and no data is transferred through 3G), drains almost no energy. Just a little more than having 3G/EDGE radio off completely. So when no apps are using 3G, you don't need to keep it off.
• Same goes to WiFi connection - although it's on, if there is no data flowing through it, it uses almost no energy.
• At full throughput (100% data flow), EDGE is using more energy than 3G. In average, 3G is more energy-efficient than EDGE.
• WiFi is using more energy than 3G (when both are at 100% use), but since it transfers files much faster and then goes to "sleep", it's actually recommended to use WiFi whenever possible. Since it'll "sleep" more often than 3G, overall it will use much less battery than using 3G.
• Some bad apps or widgets can use android's "WakeLock", keeping CPU at 100%, screen always-on, or both. I myself have encountered such widget (I won't mention the name, it's in the market) that used a WakeLock to keep CPU spun-up at 100% all the time. That makes a huge impact on battery life. My advice - use a CPU profiling app to monitor the CPU - make sure that CPU slows down by itself when it's not used. So, beware of such widgets/apps. To check for CPU cycles, many recommend OSMonitor (free from market, install it, go to options, sort by "Load" in descending order. It'll give you "busiest" processes at the top). At rest you should be getting about 10-20% for OSMonitor itself, and 1-10% Android System. At rest, everything else should be 0-1%.
• Android slows down CPU when not in use by itself, as a built-in feature. Apps that throttle/change CPU frequency, are not necessarily needed.
All this info comes from those reputable resources I mentioned above, I didn't make any of it up.
Note : I am just sharing this. All credits go this post.
Some points about LIB contradict the other points. Very wierd.
There's a lot of things that contradict each other. How does Edge take more battery than 3G? That makes absolutely no sense. With 3G I get minimum 7-8h and on Edge 12hrs+ depending on usage.
SuperAce609 said:
There's a lot of things that contradict each other. How does Edge take more battery than 3G? That makes absolutely no sense. With 3G I get minimum 7-8h and on Edge 12hrs+ depending on usage.
Click to expand...
Click to collapse
To be simple :
1. Therotically : Edge is slow in data transfer. So it requires the connection to be on for a larger amount of time as compared to 3g. While 3g completes the data transfer in a smaller time period. So 3g takes less battery as compared to edge.
2. Practically : If the 3g signal is weak, then the phone constantly tries to search for a better 3g tower, thus using more battery. While as the edge connection in most countries is stable (lot of radio towers).
So practically speaking, edge takes less battery than 3g.
Understood?
Don't be a noob. Be a newbie..!!
Details here.
It's not dangerous if we keep charging overnight at room temperature (Here in Indonesia, 25C is an average temperature at night, and 30ish at days) because the phone will stop charging after it reaches 100%
Sent from my GT-S5830 using Tapatalk 2
Hi,
Ive never had problems with my battery until recently. I decided to try new ROMs and kernels. I was on DonutHD with stock kernel since it came out but recently I changed to FeraKernel 3.6 and Feral_V22_Marvel ROM. I noticed that my battery died very very quickly even after being charged for all night. Like on standby it would only last 5 hours.
I thought it might be the ROM, so I reflashed and formatted. This time I flashed DonutHD back but kept Ferakernel. Again after full charge, the battery died after 4 hours of standby. Im not even using it. What is causing this? How can I fix it?
I would like to mention that I have checked my battery with battery health applications and all of them say that my battery is in good condition and does not need replacing.
Is ferakernel responsible for this? It cant be as a LOT of people are using it here..
Thanks
Anything is possible.
I just started testing my XPERIA X10i standby time just for a laugh.
So far on standby with 16hrs on battery, it has used 2%. The phone has an active SIM and approx 160 applications installed, including email, calendar and provider updates for different services.
Last time I did a pure standby test, I had three days up and about 70% battery remaining... then I watched a 1hr video or something. and that was the end.
To get long standby times you have to understand a few basics.
If you have the original XPERIA X10i battery you have a Li-Po battery. Most phones now have Li-ion
Your need to know what is using your battery and when.
Google Play: GSam Battery Monitor
You need to verify your phone is going into deep sleep when the screen is off or the CPU is not being actively used(running as a media server).
Google Play: CPU Spy Plus
You need to have profiles to under volt the CPU when the screen is off and/or profiles matching applications if high CPU clocking is required.
You need to find the sweet spot for minimum clocking and being able to recover and come out of deep sleep without FC or hanging the phone.
Some Kernels and ROM don't play nice with low voltage and deep-sleep.
You need to understand your CPU and the governors/schedulers you're using.
[GUIDE] CPU Governors, TCP algorithms, Android Tips, & IO Schedulers: In my Own Words
And lastly, you need you understand the applications you're running on your XPERIA X10i and what background process there are running.
For example Google Latitude and background data processing is a recipe for disaster when it comes to battery life.
And lastly(before the last lastly) you need to know what is bringing your phone out of deep-sleep when the screen is off and you're not using it.
Even basic Android battery history has the Awake column which if it's just a solid line... you're in a whole world of hurt.
And the other thing is, this is only the VERY basics of battery optimization.
The following is my XPERIA X10i after doing nothing for the last 16hrs.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
farazk86 said:
Hi,
Ive never had problems with my battery until recently. I decided to try new ROMs and kernels. I was on DonutHD with stock kernel since it came out but recently I changed to FeraKernel 3.6 and Feral_V22_Marvel ROM. I noticed that my battery died very very quickly even after being charged for all night. Like on standby it would only last 5 hours.
I thought it might be the ROM, so I reflashed and formatted. This time I flashed DonutHD back but kept Ferakernel. Again after full charge, the battery died after 4 hours of standby. Im not even using it. What is causing this? How can I fix it?
I would like to mention that I have checked my battery with battery health applications and all of them say that my battery is in good condition and does not need replacing.
Is ferakernel responsible for this? It cant be as a LOT of people are using it here..
Thanks
Click to expand...
Click to collapse
You might install CpuSpy and check whether the phone goes into deep sleep. If it doesn't then it may be some app causing the high cpu usage. Else, if the deep sleep works and the battery lasts only 5h You might have damaged battery. The programs won't show it. Also one question: does Your phone shut down by itself when using more power, like: video recording, trying to play some better game?
Dr Goodvibes said:
Anything is possible.
I just started testing my XPERIA X10i standby time just for a laugh.
So far on standby with 16hrs on battery, it has used 2%. The phone has an active SIM and approx 160 applications installed, including email, calendar and provider updates for different services.
Last time I did a pure standby test, I had three days up and about 70% battery remaining... then I watched a 1hr video or something. and that was the end.
To get long standby times you have to understand a few basics.
If you have the original XPERIA X10i battery you have a Li-Po battery. Most phones now have Li-ion
Your need to know what is using your battery and when.
Google Play: GSam Battery Monitor
You need to verify your phone is going into deep sleep when the screen is off or the CPU is not being actively used(running as a media server).
Google Play: CPU Spy Plus
You need to have profiles to under volt the CPU when the screen is off and/or profiles matching applications if high CPU clocking is required.
You need to find the sweet spot for minimum clocking and being able to recover and come out of deep sleep without FC or hanging the phone.
Some Kernels and ROM don't play nice with low voltage and deep-sleep.
You need to understand your CPU and the governors/schedulers you're using.
[GUIDE] CPU Governors, TCP algorithms, Android Tips, & IO Schedulers: In my Own Words
And lastly, you need you understand the applications you're running on your XPERIA X10i and what background process there are running.
For example Google Latitude and background data processing is a recipe for disaster when it comes to battery life.
And lastly(before the last lastly) you need to know what is bringing your phone out of deep-sleep when the screen is off and you're not using it.
Even basic Android battery history has the Awake column which if it's just a solid line... you're in a whole world of hurt.
And the other thing is, this is only the VERY basics of battery optimization.
The following is my XPERIA X10i after doing nothing for the last 16hrs.
Click to expand...
Click to collapse
Thank you for your detailed response. My battery did last longer than the last time and I dont know why It lasted only 5 hours. Maybe something was keeping it awake. What I want to know is what? I think if I notice this next time I will try to find out using the applications you mentioned.
I did install the advised applications and here are the results. My Deep Sleep time is much lower than yours.
It's hard to know in your case as you're actively using your phone.
For the purpose of testing, my phone is in standby and not being used at all other than viewing stats, capturing screens, moving screenshots onto my NAS and basic house keeping including 'normal' email and etc background processes..
If the on screen time parallels the awake times, then that would not indicate a problem. It's only when you're not using the phone and you see excessive usage, that may indicate a problem.
Your 68% sleep time considering your active use is not bad.
Do you run an active 3G/WiFi network connection all the time?
This only encourages background processes to maintain there active links and thus use processing time.
So are you running FB, Twitter, social media, news feeds and etc 24/7?
The CPU governor and clocking you use on a given ROM plays a major part too.
GSam Battery Monitor does display processes that are holding the phone awake and how often.
Just be aware, that all these monitoring applications take up resources too.
So over one and a half days and I have 89% battery left.
Just as a note, the following is what the phone signal code colours mean.
rustamabd said:
Soo... to visualize this better, here's the color table:
████████ : radio off
████████ : no signal
████████ : signal strenth 0
████████ : signal strenth 1
████████ : signal strenth 2
████████ : signal strenth 3
████████ : signal strenth 4 (Excellent)
Click to expand...
Click to collapse
The Problem is definitely not with Fera's Rom or kernels....its with the phone or the apps you use.....
After clearing the problem you can also consider this if you want more battery backup....... 1800mAh mugen battery for x10 (gives good backup time)...
srinivas103 said:
[extract]After clearing the problem you can also consider this if you want more battery backup....... 1800mAh mugen battery for x10 (gives good backup time)...[extract]
Click to expand...
Click to collapse
And if you want proof of that, just look at my battery stats as I have a Mugen Power 1800mAh battery installed.
Remember though, the battery is only as good as the applications and configuration you are running.
Bad application configuration/setup/use = bad battery life.
My battery is now at 4d 10h and 22%.
Note - I got bored waiting for the paint to dry and started touching it. :laugh: The last 50% of battery life consists of AnTuTu v3.1.2 benchmarks, application install/modification, monitoring, configuration changes and system reboots.
Hello,
I was wondering how happy you guys are with your S21 battery life?
I used a Huawei P30 Pro before. When going to bed, I usually had 30% battery left.
With my S21, I now usually charge at 7PM. I cannot imagine, that my usage habbits have changed much since - especially since I was unhappy with the battery life from day one.
I did some Analysis:
Idle:
With battery-saver (Samsungs; in Settings) on: 0.73%/h - Not bad, I would say.
With battery-saver (Samsungs; in Settings) off: 1.93%/h -Not good, I would say.
Now, do I want battery-saver on? Not sure... Why did I buy a first-class device when limiting its CPU and refresh rate?
Screen-On:
I know that here, comparing is difficult...
According to battery historian the Screen-On discharge-Rate is 16%/h. That would give me a screen-on time of 6.25h - I am hot sure if this is good.
How is it for you?
What I also notice in battery-historian is, that when switching off battery saver (green bar below) I have significantly more Userspace Wakelocks. Yes, I was also using the phone, but if you observe the yellow marked time around 12-1PM, there are wakelocks without me using the Phone.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Some more Info:
Wakelocks:
In minutes, it is not so much, but in counts... 2500 seems a lot.
Is this normal? Or is there something, I could improve/fix?
Best regards,
Hendrik
I'm not having anything like your experience. I am a US user with Snapdragon in case that matters. You don't mention how much typical daily screen on time you have.
I am sure there are more expert people here to interpret all of your captured data. But I am wondering about fundamentals. Have you already configured:
Battery optimization for all apps that don't require background operation?
"Always on" display?
Display timeout to something minimal? (I set mine to 2 minutes; I can't tolerate anything shorter)
Hello,
that is interesting to hear.
Screen on time is usually around 4h. Then the battery is completely empty.
The 2%/h in "idle" mean already on a day between 7am and 10PM 30%. So, the idle usage is about 1/3 of my drain and thus clearly worth improving. But especially the Screen On drain of about 20%/h is too high, I think. This morning I used the phone for below 2 minutes and the battery was already at 98%.
Regarding Apps in Standby: The phone has put many apps automatically in the list of "APPs in deep standby". I have manually added some.
I have only few Apps never in Standby:
Kalender, Kalendar widget, Telegram, Threema, Whatsapp.
Always on display is off
Display brightness is set to around 50%. Refresch rate is "Adaptive" and Timeout is 2 minutes.
So, I think this is all reasonable.
Any ideas?
Best regards,
Hendrik
Sorry, double post
henfri123 said:
Hello,
that is interesting to hear.
Screen on time is usually around 4h. Then the battery is completely empty.
The 2%/h in "idle" mean already on a day between 7am and 10PM 30%. So, the idle usage is about 1/3 of my drain and thus clearly worth improving. But especially the Screen On drain of about 20%/h is too high, I think. This morning I used the phone for below 2 minutes and the battery was already at 98%.
Regarding Apps in Standby: The phone has put many apps automatically in the list of "APPs in deep standby". I have manually added some.
I have only few Apps never in Standby:
Kalender, Kalendar widget, Telegram, Threema, Whatsapp.
Always on display is off
Display brightness is set to around 50%. Refresch rate is "Adaptive" and Timeout is 2 minutes.
So, I think this is all reasonable.
Any ideas?
Best regards,
Hendrik
Click to expand...
Click to collapse
Hi, AUHD(best on for battery life) or older SW? I have with first beta 5-7h sot, while night when I don't use phone I have 0,2%/h drain, with screen on max 7-9%
Wow, more than Double for me.
What is AUHD?
I have all updates installed.
Software version, if you have latest version there will be something wrong with your phone, try to find apps causing that high consumption. And never put any app to deep sleep or sleep mode, and don't use battery saver. This has for me other effect than lower consumption. These three things I have disabled - wificall,volte and 5g, nothing more.
And on WiFi turned off mobile data, GPS and bt.
vlubosh said:
Software version, if you have latest version there will be something wrong with your phone, try to find apps causing that high consumption. And never put any app to deep sleep or sleep mode, and don't use battery saver. This has for me other effect than lower consumption. These three things I have disabled - wificall,volte and 5g, nothing more.
And on WiFi turned off mobile data, GPS and bt.
Click to expand...
Click to collapse
In fact you have transformed your S21, you have made a Nokia 3310 now ......
Do not stop the adaptive battery, it is the best innovation from Google that Samsung has included. The I really do not understand your idea of using a smartphone with all these options to cut .........
naudmick said:
In fact you have transformed your S21, you have made a Nokia 3310 now ......
Do not stop the adaptive battery, it is the best innovation from Google that Samsung has included. The I really do not understand your idea of using a smartphone with all these options to cut .........
Click to expand...
Click to collapse
There is no other way how to safe battery when you own Samsung device. It's very bad adjusted this one ui.... I've got lot of devices, s21(all versions) is worst of all of them
vlubosh said:
There is no other way how to safe battery when you own Samsung device. It's very bad adjusted this one ui.... I've got lot of devices, s21(all versions) is worst of all of them
Click to expand...
Click to collapse
I have the S21 from the start I have always held 1 day and 18 hours on average with 2 hours of stupidity, and I do not deactivate absolutely anything, gps, WiFi, 5g, Bluetooth, I leave everything on, and it works perfectly ... .... For the adaptive battery to work properly, it needs 7 to 10 days minimum ..... It does not do in a day .... And personally I have had all the galaxies since the 1st galaxy , I got them all. And many fail to configure it correctly. And above all, gave him time to configure himself on energy management.
naudmick said:
I have the S21 from the start I have always held 1 day and 18 hours on average with 2 hours of stupidity, and I do not deactivate absolutely anything, gps, WiFi, 5g, Bluetooth, I leave everything on, and it works perfectly ... .... For the adaptive battery to work properly, it needs 7 to 10 days minimum ..... It does not do in a day .... And personally I have had all the galaxies since the 1st galaxy , I got them all. And many fail to configure it correctly. And above all, gave him time to configure himself on energy management.
Click to expand...
Click to collapse
And in the 1 day and 18h you have 5-6 hours sot?
vlubosh said:
And in the 1 day and 18h you have 5-6 hours sot?
Click to expand...
Click to collapse
No, 2 hours of sot on Android 12 beta 1
naudmick said:
No, 2 hours of sot on Android 12 beta 1
Click to expand...
Click to collapse
Whit yours sot I have to charge phone every 8h, 3 times a day, this is not what a customer needs... I see you are fan of Samsung(I was also- S6,7,8,10 and now 21) but comparing to other brands you have sot from 5-11h with no restriction.
For last I will mention android auto, first time in 3 years I see the first device what can manage android auto, so many lags and no interest from Samsung to fix it...
I will also mention the good things because of them I still have s21, display visibility in outdoor, speaker sound, cameras.
Just use power saving mode with 120hz enabled and u will get 5-6h of SOT easily.
Hello,
I have factory reset the device now. I got 6h SOT now (twice of what I achieved before.
No Idea what the reason could be, though.
The only thing that I am not yet using again is Nova Launcher.
Greetings,
Hendrik
I also came from Huawei P30 Pro and I've the impression that I had more battery before.
I've a S21 (Exynos version) and I think SOT is around 3-4h.
Did you let everything in automatic like "smart wifi", 5G, Bluetooth, ... ?
I don't understand questions like this. S21 is basic model and obviously has shortest battery life. If you want a big SoT, open
Battery life tests - GSMArena.com
www.gsmarena.com
customize usage pattern and choose your phone for example S21+. If you have already bought S21, turn on 60 Hz screen, lower the brightness, reduce the processor frequency, turn off unnecessary communications and functions. I'm very happy with battery life for my tasks ))
batroc said:
I don't understand questions like this. S21 is basic model and obviously has shortest battery life. If you want a big SoT, open
Battery life tests - GSMArena.com
www.gsmarena.com
customize usage pattern and choose your phone for example S21+. If you have already bought S21, turn on 60 Hz screen, lower the brightness, reduce the processor frequency, turn off unnecessary communications and functions. I'm very happy with battery life for my tasks ))
Click to expand...
Click to collapse
S21 has a battery of 4000 mAh and a screen of 6.2 inch
S21+ has a battery of 4800 mAh with a screen of 6.7 inch
S21 Ultra has a battery of 5000 mAh with a screen of 6.8 inch.
Ok, S21 has the smallest battery but also the smallest screen.
I let everything in automatic mode like you can see on the attached screenshot.
I don't see the problem if we ask to someone if he let everything in auto or if he plays with Bixby Routine to optimize his smartphone.
I am also happy with this smartphone and its size but when I'm leaving to a place with power, I know that I need to take my power bank even in Batter Saver mode
I also thank you for your link. I can see, according to test result, there is a difference of 7h between S21 and P30 Pro. I don't have this impression
S21 has a battery of 4000 mAh and a screen of 6.2 inch
S21+ has a battery of 4800 mAh with a screen of 6.7 inch
S21 Ultra has a battery of 5000 mAh with a screen of 6.8 inch.
Click to expand...
Click to collapse
4000/6,2 = 645 mAh per inch
4800/6.7 = 716 mAh per inch
I don't know why in a place without power, for example, an option is needed "Turn on Wi-Fi automaticaly", Wi-Fi is looking for a router all the time.