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Update and FIX!
My phone is no longer draining massive amount of batt life when idle (3-5% after 7 hours of idle), android system usage is now down to 5-15% instead of 78-97% from before.
My fixes.
1. Turn off data syncing
2. Turn off wifi while on the road (so wifi doesn't constantly look for signals).
3. Clear memory
Yes, att installs a lot of bloatware that constantly update for changes.
If killing those services AND disabling data syncing doesn't help your problem, then you have a kernel problem (like myself).
If this is the case, do the following:
1. Take phone back to att and get a replacement
OR
2. Re-flash your android with the STOCK kernel found here
http://forum.xda-developers.com/showthread.php?t=1286432
OR
3. Reflash with cognition x2 (reported to solve a member's problem, I didn't try this myself).
NOTE** This will root your phone, you will NOT get the exclamation mark during boot up, but kernel counter may be at "1" after this process.
Re-flashing my phone AND applying the three tricks I mentioned above worked for me..finally my phone is no longer crippled with crappy battery life and recharging is A LOT faster now.
I must be going crazy but this sg2 is killing me. I got it from Att yesterday and the battery life has been pretty HORRIBLE. (First time android user btw).
The phone will eat up 10% of my batter life after only 90 mins of idle. I checked the battery usage and Android OS is at around 78%!!! How do I fix this problem? I downloaded OS monitor and didn't really see anything that uses a lot of CPU, except for certain files syncing from time to time (but 2-3% usage usually).
Checked with battery spy and apparently the majority of the time, the phone was hovering around 200mhz 70% of the time and not deep sleep.
It's sad to have only 1.5 hours of display time with a battery of 45% left (7 hours total time)...coming from an Iphone 3gs, this is just unacceptable. I almost flashed to the 2.3.5 firmware but noticed it's NOT compatible with ATT's version of SG2.
I see people who have a total time of 2 days AND a screen time with 3 hours with 30% battery left. I wish I can get half that!
Running on 2.3.4, can't be the infamous drainage bug right? Thought that only happens with the 2.3.3s
Wifi on, application sync on, GPS off, brightness at 25%, using live wallpaper (the windmill). No active apps on. Downloaded aim, epocrates, battery monitor, cpu spy, and os monitor..rest of the apps are stock.
Update
According to my CPU spy
For the past hour that the phone was in idle
2:20mins at 1200mhz
4:52mins at 1000mhz
8:33 at 800mhz
1:28 at 500mhz
10:11 at 200mhz
33:36 in deep sleep
Currently Android CPU usage is @ 97%, display time of 7mins(2%)
2h 30mins since last charge (97% charge)..current power is 79%. Did nothing but idling and checking battery life.
So...that's 30 mins out of the hour in which my idling cellphone was hacking the pentagon....
Also the cellphone is a tiny bit warm to the touch (not cold)
I have 35% battery life remaining and have been unplugged for nearly 11 hours. This is significantly better than what I was getting with a Thunderbolt on Verizon, where I was needing to charge after about six hours of use. 11 hours and 35% remaining isn't the best in the world, but it's only been two days. The phone needs a few days to charge and discharge to determine true battery stats and will probably get better.
Being that this is your first Android battery life will not seem great but let it settle in for a few days it should get better.
Sent from my SAMSUNG-SGH-I777 using xda premium
Used Nexus S, LG Thrill, Samsung Focus, Infuse, This is the best Android phone for battery. I have 40% left with normal use (emails, calls, music, read news) at the end of the day. Huraaaaa
Singuy1234 said:
I must be going crazy but this sg2 is killing me. I got it from Att yesterday and the battery life has been pretty HORRIBLE. (First time android user btw).
The phone will eat up 10% of my batter life after only 90 mins of idle. I checked the battery usage and Android OS is at around 78%!!! How do I fix this problem? I downloaded OS monitor and didn't really see anything that uses a lot of CPU, except for certain files syncing from time to time (but 2-3% usage usually).
Checked with battery spy and apparently the majority of the time, the phone was hovering around 200mhz 70% of the time and not deep sleep.
It's sad to have only 1.5 hours of display time with a battery of 45% left (7 hours total time)...coming from an Iphone 3gs, this is just unacceptable. I almost flashed to the 2.3.5 firmware but noticed it's NOT compatible with ATT's version of SG2.
I see people who have a total time of 2 days AND a screen time with 3 hours with 30% battery left. I wish I can get half that!
Running on 2.3.4, can't be the infamous drainage bug right? Thought that only happens with the 2.3.3s
Click to expand...
Click to collapse
If you only got the phone yesterday, its way to early to make any judgments on battery life. Battery needs at least 3-5 days to settle in and build consistent battery stats.
Also, what are you settings? Auto Brightness, Bluetooth, GPS, auto syn(exchange emal, gmail, facebook, etc). If your not using these, they should be OFF. It's easy to manually refresh email, etc.
I've seen some people reporting very high Android OS(over 50%) but still getting solid battery life.
I'm at 1hr display time, heavy texting. 72% left, been unplugged for 12hrs
no people what this guy is talking about is the android os bug. i have it too. hopefully an upgrade or different rom will fix it. my phone has been unplugged 11 hours with only 1 1/2 hour display but android os has ran for 52 minutes and now im at 32% battery life. once this bug gets worked out the battery life will be amazing.
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
I'm very happy with mine, this was the first total drain on a new battery so I know it will only get better.
Total time: 18hr 25min
Display time: 4hr 48min
I think it's the system os, not the hardware. There were a few times when the battery didn't discharge itself at 7%/hour (had it idle for 3 hours and it went down like 2%).
And yes, everything is turned off except the sync app data and wifi. There's no option to turn off 4g btw. It's just weird how sometimes it's in this mode of power drainage, and then sometimes it doesn't drain much..but most of the time, it's draining.
I seriously doubt the phone can only run 2.5 hours worth of heavy usage or 12 hours of standby (it should last days!). If this is "normal" for android, then maybe I should have a visit back to att and exchange for an iphone (and I really don't to!)
Sledutah said:
I'm very happy with mine, this was the first total drain on a new battery so I know it will only get better.
Total time: 18hr 25min
Display time: 4hr 48min
Click to expand...
Click to collapse
that is freakin incredible. i am gonna try a restore or something im down to 28% life. 1:40 display android os 1 hour.
can you please post the cpu total time in android os so i have an idea
VFO said:
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
can you please post the cpu total time in android os so i have an idea
VFO said:
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I agree - as I said in the Android OS drain thread, even in "good" situations, Android OS displays way high on our systems. I think it's a reporting bug.
I dropped 2% in 5.5 hours completely idle (sitting on my shelf) last night - Android OS was at over 60%. It seems that so far for me, the higher it is, the better my battery life is.
I drop around 15-20% in 9 hours of being mostly idle at my desk at work - it's a weak-signal location so the radio eats much more battery.
One thing is that unlike first-generation GalaxyS devices and interim ones like the Infuse, the GS2 has a coulomb-counter type of battery gauge. This type of gauge sometimes needs to be calibrated with multiple charge/discharge cycles or it will misreport battery state of charge. (However, when calibrated, it's much more accurate.)
Edit: I do have some power management tweaks in the kernel I'm running, but they don't make that much off a difference except in some high-drain corner cases in my experience. I'll be releasing it sometime later this week depending on how well these antibiotics do their job.
Do i need to install a battery app to see the percentage? or we have a way?
Install this app:
http://forum.xda-developers.com/showthread.php?p=15869868#post15869868
If you see "DataTracker-FD" or "Fast Dormancy" as the top wake lock, go into dialer
dial *#*#9900#*#*
disable Fast Dormancy (FD).
By default, the Samsung Galaxy S II has Fast Dormancy support enabled. One of the goals of Fast Dormancy is to increase the battery life of a device, by limiting the amount of signaling between the phone and the cell network. But, when Fast Dormancy it is not enabled in the network and is enabled on the phone it ironically works the other way around, and actually drains more battery than before.
Click to expand...
Click to collapse
That applies to the I9100.
As far as I can tell, the I777 has FD disabled by default. (This may change once I9100 ROM ports start showing up)
Okay, charged my battery to 97%(I got a beep saying it's fully charged). Idled for the past 2 hours and 22 mins. Battery is at 86%.
According to the battery, my screen account for 2%, and the android system accounts for 97%.
This is a stock phone guys, I have no apps installed!
Entropy512 said:
One thing is that unlike first-generation GalaxyS devices and interim ones like the Infuse, the GS2 has a coulomb-counter type of battery gauge. This type of gauge sometimes needs to be calibrated with multiple charge/discharge cycles or it will misreport battery state of charge. (However, when calibrated, it's much more accurate.)
Click to expand...
Click to collapse
How do you calibrate it?
sweetboy02125 said:
Do i need to install a battery app to see the percentage? or we have a way?
Click to expand...
Click to collapse
Settings > About phone > Battery usage
WillEat4F00d said:
How do you calibrate it?
Settings > About phone > Battery usage
Click to expand...
Click to collapse
I'm talking about live battery display. I installed no lock and have no lock screen to see how many % left.
sweetboy02125 said:
I'm talking about live battery display. I installed no lock and have no lock screen to see how many % left.
Click to expand...
Click to collapse
Just search up "battery indicator" in the Market and you'll get a few to choose from.
I too got mine yesterday and started tinkering around with installing apps and such to test out all functions before I rooted it and move onto cm7 most likely. The 1 things I noticed was that the battery was NOT completely full when it was first turned on at the store so once it got a little lower after playing with it I charged it up overnight. Today the battery was WAY BETTER and was not dead yet. I have been using it NON STOP today, rebooting it, testing it, trying to root it, rebooting some more, some time using tango to test it out, watched a Netflix movie, pretty much taking full advantage of it all day. I finally decided to charge it up and use my Captivate a bit. I didn't keep track of usage and times today but I KNOW it lasted a WAY LONGER time with all I was doing with it than my Cappy. Tomorrow I will check more out possibly before putting on a rom.
So LOOOONNNNGGGG STORY short make sure you charge it up once you get it before messing with it too much and then it will LAST LONGER.
Sent from My KickAss Captivated CM7 OC'd 1.5Ghz/Undervolted
After two nights of completely draining then recharging the battery to full, the battery has gotten significantly better. I'm trying to drain it again before I go to bed tonight but I don't think I'll make it.
I played the entirety of Toy Story 3 on max brightness, and only burned 20% of the battery!
I got a battery app installed which shows % in the top bar. It stays at 100% for a while but when it starts draining with the screen on I lose about 1% every 1-2 minutes, I think its somewhere in between, if I am taxing the cpu it more frequeent than every minute, this would give me about 2-3 hours usage which seems extremely low.
Brightness is min.
wifi/3g off.
auto sync off.
accuweather is installed (mentioned as it has a service running).
I get the drain simpley from doing things like scrolloing app drawer and checking sms.
With screen off in sleep mode battery drain is ok less than 5% in 12 hours. I have this issue confirmed on 2 different batteries.
If this is normal fine, I just want to compare to others on this.
I used to get around 1 day for heavy use ( like wifi, games, etc.) and 1.5 to 2 days for moderate use Which ROM are you using ??
Cm7 based roms use more battery than stock, cuz also their performance is a lot better.
Use uot Kitchen to get the % battery instead of an app.
Also the launcher u use affects battery. ie Go launcher drains plenty of battery.
If you can't squeeze a day's worth of battery from ur phone ur probably using it too much (how much does a laptop last on battery, seriously!)
Sent from the other side... of the screen
dxppxd said:
Cm7 based roms use more battery than stock, cuz also their performance is a lot better.
Use uot Kitchen to get the % battery instead of an app.
Also the launcher u use affects battery. ie Go launcher drains plenty of battery.
If you can't squeeze a day's worth of battery from ur phone ur probably using it too much (how much does a laptop last on battery, seriously!)
Sent from the other side... of the screen
Click to expand...
Click to collapse
you mean a day of constant use screen on or would there be periods of it sleeping?
My phone lasts more than a day mostly 3-5 days but thats mainly because its idle most of the time. However I plan to transfer some tasks to it and it seems I will need to keep the charger in during the day.
Compared to stock CM I think isnt too bad, the drain was also bad on stock with the screen on and during calls but the only reason I specified CM is that I didnt have the % meter on my stock rom which means I dont have the same comparison.
My current rom is vo-1's 30 may build. I had bugs on official nightly that vo-1's resolved (including force reboot when using market) so is the reason I am using it.
Incidently my laptop drains its battery slower than my android.
Why I read that so many use thier phones like 2 days, and I can't even get a 12 hours fair use.
I use 2G (3g drains my battery really quick), some whatsapp, some FB and some calls. Music it's only in the morning on my way to work.
I've buy a new battery from ebay, but, it's the same. Using CM 7.1 rom "The End 4.0"
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
chrcol said:
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
Click to expand...
Click to collapse
That's insane... either you DO NOT have data connection (an internet plan) or you are just a lucky guy. 2 days are barely believable but 4??? Give me a break!!!
Enviado desde mi GT-S5830 usando Tapatalk 2
chrcol said:
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
Click to expand...
Click to collapse
Surely, you're not using WhatsApp, Facebook Messenger, handling e-mails or any of the like. If you're just using the SGA like a normal phone, OF COURSE it can give you that kind of performance. If I'm wrong, please correct me.
nanox_al said:
That's insane... either you DO NOT have data connection (an internet plan) or you are just a lucky guy. 2 days are barely believable but 4??? Give me a break!!!
Enviado desde mi GT-S5830 usando Tapatalk 2
Click to expand...
Click to collapse
He barely touched his phone Anyone can get 5-6 days like that! And being on Stock, it's extremely probable.
Well mate you can't expect battery on a cm rom. Performance and good battery isn't an option on cm. Performance is great on cm but battery, nah!
Sent from my Galaxy S IV
yeah sadly it seems noone has a comparison that I need.
Which is time needed for 1% usage whilst screen is on.
This isnt on stock tho the phone is on CM7.2 vo-1 build.
From what I see the battery life is around the same as stock.
Now I am over 5 days with 17% left. Just did a phone call and it stayed at 17%. When below 20% on stock the phone was unuseable.
abhibnl said:
Well mate you can't expect battery on a cm rom. Performance and good battery isn't an option on cm. Performance is great on cm but battery, nah!
Sent from my Galaxy S IV
Click to expand...
Click to collapse
Tru that! I'll try with a stock one. The only BIG problem, is that WIFI keeps disconnecting...
Enviado desde mi GT-S5830 usando Tapatalk 2
Removed post.
Anyone with a telecom New Zealand (9300T) can you check your cellstandby for battery
It is using more than the screen is.
yesterday phone was at 30% with only 2 hours screen on.
Cellstandby used 67%
Can anyone else confirm that they are having the same problem on the S3 or is it the telecom nz firmware doing it.
If so I will root and flash another providers firmware
I have the phone in dubai and the cell standby has been very high since day 1.
Sent from my GT-I9300 using XDA
mrtoken said:
Anyone with a telecom New Zealand (9300T) can you check your cellstandby for battery
It is using more than the screen is.
yesterday phone was at 30% with only 2 hours screen on.
Cellstandby used 67%
Can anyone else confirm that they are having the same problem on the S3 or is it the telecom nz firmware doing it.
If so I will root and flash another providers firmware
Click to expand...
Click to collapse
Yea my cellstandby is reading 42%,says it was the cell radio oslt when i clicked o it. Im on telecom fyi
Sent from my GT-I9300T using XDA
Same problem in norway .
Sent from my GT-I9300 using xda premium
This is NOT an issue. The numbers have to equal 100% as its a measure of what's been happening since your last charge so if its doing nothing then cellstandby gets the highest percentage. ITS NOT A BUG.
ThreeTwoBravo said:
Yea my cellstandby is reading 42%,says it was the cell radio oslt when i clicked o it. Im on telecom fyi
Sent from my GT-I9300T using XDA
Click to expand...
Click to collapse
That means that it has used 42% out of the 37% that have been used during those 8,5 hours. 42% out of 37% = 15,5%
Hence, cell standby, only used 15,5% of battery during those 8,5 hours.
15,5/8,5 = 1,8 % an hour.
Not an issue, as stated previously.
bnathan said:
This is NOT an issue. The numbers have to equal 100% as its a measure of what's been happening since your last charge so if its doing nothing then cellstandby gets the highest percentage. ITS NOT A BUG.
Click to expand...
Click to collapse
Go away with your baboon logic. There's people posting 5h screentime battery statistics with cell standby having almost equal percentage as the screen. Either it is a very bad reporting error, which I doubt because people are reporting bad standby battery life, or there is something wrong with the modem firmware which has already happened on other devices.
It is an obvious issue, and please go install Badass Battery Monitor or something else to view the absolute µAh draw so we can stop the lame excuses about how things need to sum up to 100 and other flawed logics.
Hence, cell standby, only used 15,5% of battery during those 8,5 hours.
15,5/8,5 = 1,8 % an hour.
Click to expand...
Click to collapse
And since when the hell is 1.8%/h pure modem draw been acceptable? The Galaxy S2 with the predecessor of the exactly same modem hardware is getting 0.5%/h total standby draw usually.
I'm on Vodafone nz. With pretty heavy use the figures were just over 7 hours screen time out of 12 total and cell standby stood at 14%
Sent from my GT-I9300 using Tapatalk 2
IncCo. said:
That means that it has used 42% out of the 37% that have been used during those 8,5 hours. 42% out of 37% = 15,5%
Hence, cell standby, only used 15,5% of battery during those 8,5 hours.
15,5/8,5 = 1,8 % an hour.
Not an issue, as stated previously.
Click to expand...
Click to collapse
Safe man, I was really only posting to help confirm things for the OP but thanks for the info mate
Sent from my GT-I9300T using XDA
Those with high cell standby values.Try a different modem firmware.
There is no one size fits all firmware on Galaxy phones.
Sent from my GT-I9300 using XDA
guy try to go into airplane mode at night or when u dont need it really.
sJ
I have the same problem with standvy taking over 2%/per hour. And the radio bar is always 2-3 bara... Didn't have that much problem with gs2.
Sent from my GT-I9300 using XDA
same problem.
Phone Radio drains around 30-50% of my battery life.
It drained over 8% of my battery in 5 hours today. (Battery at 78% now in 5 hours - was 100% this morning)
Having this problem as well. Phone wont last me throughout the day with minimal use and you can feel it hot when placing it in my bag.
I wont start talking about the % use of cell vs screen. But when the battery lasts 10 hours with only 30min of screen use throughout the day, then there's a problem !!
I had this problem with Galaxy S. Changed modem firmware seemed to help a bit but still isnt as long as my previous phones.
yuhaohuang said:
Having this problem as well. Phone wont last me throughout the day with minimal use and you can feel it hot when placing it in my bag.
I wont start talking about the % use of cell vs screen. But when the battery lasts 10 hours with only 30min of screen use throughout the day, then there's a problem !!
I had this problem with Galaxy S. Changed modem firmware seemed to help a bit but still isnt as long as my previous phones.
Click to expand...
Click to collapse
Seems something is wrong with your phone. Mine has had medium use for over 20 hours and i have 36% battery left.
Mine is at 61% now and it's has 09:30 hours use. My screen has been on for 1:30 hours so quite heavy use.
The weird thing is:
My phone radio started out with 55% power use the first 2 hours and dropped to 30% power use and is still dropping. No idea why tbh. I didn't use my phone more or let my screen on for more time..
My screen is still around 50%
My app use is 21% now. (with sygic taking up 10% while the app is not even on)
Hey new here....
12 hours with absolutely no usage besides alarm and went from 100 -> 13% battery.
Will get the battery app mentioned previously and see what that reports.
Waarez said:
Mine is at 61% now and it's has 09:30 hours use. My screen has been on for 1:30 hours so quite heavy use.
The weird thing is:
My phone radio started out with 55% power use the first 2 hours and dropped to 30% power use and is still dropping. No idea why tbh. I didn't use my phone more or let my screen on for more time..
My screen is still around 50%
My app use is 21% now. (with sygic taking up 10% while the app is not even on)
Click to expand...
Click to collapse
Something is causing a wakelock. Use the app betterbatterystats to identify the culprit.
Sent from my GT-I9300 using Tapatalk 2
I was going to make a topic a our this problem but then i saw this. So basically the guys have described the problem we have with cell stand by. Below are the screen shot I took after my battery reached 6%.
snOwjAwk said:
guy try to go into airplane mode at night or when u dont need it really.
sJ
Click to expand...
Click to collapse
I usually turn my phone off at night funnily enough
My phone was at 70% cell stanby, the Android OS bug that was ever present in the SGSII seems to have all but gone but now we have cell standby
Hey guys
I got my ultra yesterday and it came with about 40% battery and it took nearly 2 hours of screen on time to kill it which was amazing
I've given it a full charge so this is my first cycle and battery life isn't great with just over 1hour and 10 minutes screen on time which is worse then my 18 month old s3
Will it get better over time? I've got all the power saving features on
Thanks
J
Sent from my C6833 using xda app-developers app
JackHanAnLG said:
Hey guys
I got my ultra yesterday and it came with about 40% battery and it took nearly 2 hours of screen on time to kill it which was amazing
I've given it a full charge so this is my first cycle and battery life isn't great with just over 1hour and 10 minutes screen on time which is worse then my 18 month old s3
Will it get better over time? I've got all the power saving features on
Thanks
J
Sent from my C6833 using xda app-developers app
Click to expand...
Click to collapse
Yes it will get better over time.
Brilliant I look forward to it
Sent from my C6833 using xda app-developers app
1 hour 10 minutes from 100 to 0%? You should get around 5-7 hours of screentime. Just keep using it though and it should get better in a few days.
LordManhattan said:
1 hour 10 minutes from 100 to 0%? You should get around 5-7 hours of screentime. Just keep using it though and it should get better in a few days.
Click to expand...
Click to collapse
Just went through the first cycle and it was about 3 hours, Battery seems weird on this device, I unplugged it from full at 100% but I leave it on 100% for about 20 minutes after and it went straight down to 99% where as my nexus 7 doesnt do that :S
JackHanAnLG said:
Just went through the first cycle and it was about 3 hours, Battery seems weird on this device, I unplugged it from full at 100% but I leave it on 100% for about 20 minutes after and it went straight down to 99% where as my nexus 7 doesnt do that :S
Click to expand...
Click to collapse
Hard to tell if it's normal or not. Are you using any apps that updates themselves frequently in the background? Widgets? Whatsapp? FB Messenger? I've had mine in standby for 8 hours (while at sleep) at 100% before, and it was still at 100% eight hours later, so it shouldn't drop 1% in 20 minutes.
Just keep using it for a week or so, and if it isn't better, you might have a lemon. But again, it's incredible hard to say what it might be. You can also do a factory reset and see if that solves anything. It might simply be a bug or an app that's gone rogue.
Agree with LordManhattan and 3mL.
When I first got it, I had the same questions about battery life. I was literally seeing it draining a percent a seconds. There were some rogue apps, like whatsapp and pinger (textfree), that were constantly doing something in the background. Uninstalled those and got much better results. After about a week or so and a few battery cycles, the battery also improved drastically.
Try some of the apps that monitor and hibernate apps, e.g. greenify and wakelock detector. I'm sure there are others but those are the ones I use.
I had a 2 percent drop last night so not to bad
And im not rooted so I cant use those apps at the moment
Ill see how it gets on
Sent from my C6833 using xda app-developers app
I m on stock rom rooted. using stamina mode while allowing some of the apps to run in background. battery life is great
never let battery life go below 50%. on contrary to popular belief, it is not wise to let ur batter drain completely. for the first few cycles refer to the manual
I normally get about 1-2% drain over night, a bit more if the cell signal decides to play up a but.
Over this week I got 4d 12h on one charge with 12% still remaining - very light usage: 3 or 4 calls, a few emails, a few geo-tagged photos, a note or two with poor signal most of the working day.
Its been rather strange for me, on the first charge cycle I got 4.5 hours of screen on time and the 2nd I got 4 hours
Im now on my 3rd and im at 85% with only 48 minutes of screen on time which isnt too bad but I feel like I have to have low battery mode and stamina mode on just to get it through the day
Hopefully Sony release a fix or 4.4 with better battery life
Sent from my C6833 using xda app-developers app
JackHanAnLG said:
Its been rather strange for me, on the first charge cycle I got 4.5 hours of screen on time and the 2nd I got 4 hours
Im now on my 3rd and im at 85% with only 48 minutes of screen on time which isnt too bad but I feel like I have to have low battery mode and stamina mode on just to get it through the day
Hopefully Sony release a fix or 4.4 with better battery life
Sent from my C6833 using xda app-developers app
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Well i don't want to be rude, but are you just stare to your screen for 4 hours? Or are you also doing something with the phone?
Because it really matters what kind of activity regarding your battery life you're doing. Smartphones are not battery friendly, get your charger with you or buy a mobile charger.
Hey guys so the title says It all really, over night I can lose up to 10% which isn't normal I know
If I charge my phone up and use it straight I'll get about 5.5 hours out of It ( screen on time ) but if I don't use it to intensively it'll be about 4.5 which doesn't make sense
Sometimes when I reboot the device it goes down by a few percent as well, anybody had this issue?
J
Sent from my C6833 using xda app-developers app
Are you using STAMINA mode?
That's strange. Do you have a lot of IM apps and widgets/apps that updates in the background? As you probably know by now, you shouldn't see more than 1-2% drop in battery in 7-8 hours if you don't touch it. I'm on GPe now that doesn't have the fancy battery saving features, and i'm getting very good battery life. It's currently at 70% after 10 hours on and 2 h 30 min screentime.
It's probably something that's going rouge in the background, but check your apps that updates automatically.
Same as me
I lose up to 15% overnight
I have Line / Weather widget / Twitter / Facebook / and more
I did not turn on Stamina mode
ps000000 said:
Same as me
I lose up to 15% overnight
I have Line / Weather widget / Twitter / Facebook / and more
I did not turn on Stamina mode
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Turn it on and watch the miracles ensue.
hassanmahmood said:
Turn it on and watch the miracles ensue.
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Nowp. Got Stamina mode on, with only 2 exceptions: email + weChat, and also see a 10% drop each night.
I assume the problem is that Wifi or Data connection do not get disabled in stamina mode. You expect them to be disabled, until a request comes from the programs for a "poll event", reactivated, task finished, and then disabled again. But from what i can tell, the connections stay live.
Have you try juice defender. I use it better then stamina. I only have home page and none live wall paper and I only get 1 to 1.1/2% loss all night from 100% to 99 or 98 in the morning
jaime4272 said:
Have you try juice defender. I use it better then stamina. I only have home page and none live wall paper and I only get 1 to 1.1/2% loss all night from 100% to 99 or 98 in the morning
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I have noticed this once or twice before, last culprit was google keyboard in about 8h overnight it was almost always awake (about 50%), almost 2h of cpu time, used near 400meg of data - this was in SlimRom
Last night I had 81% battery before I went to sleep at 10:00. I then put my Xperia Z Ultra in Stamina mode. At 6:05 (8 hours 5 minutes) after my battery dropped to 80%
Therefore I only lost 1% overnight which is excellent.
Damn. Thought i was getting decent battery life (currently at 1d 6h on, 5h 25m screentime), but the way you're going you might reach 7 hours screentime on one charge...
And the cp12 isn't currently available where I'm at. Bummer.
LordManhattan said:
That's strange. Do you have a lot of IM apps and widgets/apps that updates in the background? As you probably know by now, you shouldn't see more than 1-2% drop in battery in 7-8 hours if you don't touch it. I'm on GPe now that doesn't have the fancy battery saving features, and i'm getting very good battery life. It's currently at 70% after 10 hours on and 2 h 30 min screentime.
It's probably something that's going rouge in the background, but check your apps that updates automatically.
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hassanmahmood said:
Are you using STAMINA mode?
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Yes :/
LordManhattan said:
That's strange. Do you have a lot of IM apps and widgets/apps that updates in the background? As you probably know by now, you shouldn't see more than 1-2% drop in battery in 7-8 hours if you don't touch it. I'm on GPe now that doesn't have the fancy battery saving features, and i'm getting very good battery life. It's currently at 70% after 10 hours on and 2 h 30 min screentime.
It's probably something that's going rouge in the background, but check your apps that updates automatically.
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That's really good, I'm on 70% with stamina mode on and 1.5hour screen on time
I'm thinking maybe my battery needs calibrating using an app? It shouldn't drop that much and it shouldn't drop a few percent by turning it on and off
Sent from my C6833 using xda app-developers app
JackHanAnLG said:
I'm thinking maybe my battery needs calibrating using an app? It shouldn't drop that much and it shouldn't drop a few percent by turning it on and off
Sent from my C6833 using xda app-developers app
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Those battery calibration apps are a complete farce IMHO, modern batteries don't have their own internal memory like the old ones did, the best calibration you can do is a full recycle.
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SpyderTracks said:
Those battery calibration apps are a complete farce IMHO, modern batteries don't have their own internal memory like the old ones did, the best calibration you can do is a full recycle.
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Yep. Also had a out of sync battery. Fully loaded ( green light ), it still showed 97% on the meter. So i drained the battery down to 1%, charged up to 100%, and voila ... Battery indicated correctly 100%, and has been correct every time.
Benjiro said:
Yep. Also had a out of sync battery. Fully loaded ( green light ), it still showed 97% on the meter. So i drained the battery down to 1%, charged up to 100%, and voila ... Battery indicated correctly 100%, and has been correct every time.
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just a reminder that the LED turns green at ~90% not fully charged
If you are in an area with very poor cellular reception and your cellular radios are on this can happen. It would help if you would post some screenshots of your battery usage in different scenarios; otherwise we can't help you too much
You could have a transistor leaking current or a short somewhere inside the device. Try a factory reset if you've exhausted all other options and if it persists contact Sony.