Develop Bugs

ics and battery life

At first my girlfriend had her Nexus S updated to ics and immediately we noticed a huge difference in how long her battery lasted and she is the furthest thing from a heavy user.
So when I heard that ics ws being released for our phone my first thought was i hope that what she experienced won't be what i do as we have a better phone right?
Well I am sad to say on a stock but rooted rom I experience the same lack of battery life as her.
Now I am no beginner to Android and have changed all sorts of settings available and nothing syncs on its own and when I unplug my phone from charging in the morning I will need to plug my phone in at night before bed as my phone will be completely dead.
I have to say I am very disappointed in the battery life of thr the stock rom and hope some good kernels make it out to help.
Sent from my SGH-T989D using XDA

Have you tried to find out which app/process is draining your battery? Better Battery Stats can help you identify what is using up your battery.
I had a big keep awake problem when i first installed stock ICS on my T989D. I did a full wipe of the phone and formatted my internal SD card (after backing things up of course), reinstall the same stock ICS and everything works great now. Battery life is about the same as before (stock GB w/ Synergy kernel), which is about 30 hours with moderate use.

Try CM 9. I get almost 2 days of battery life.
Sent from my SAMSUNG-SGH-T989 using xda premium

I've never had better battery life personally.
Sent from my SGH-T989D using Tapatalk 2

Though I am now on AOKP, I had great battery life on stock ICS as well. But, everything is subjective. How many email accounts are being synced? Do you have Facebook / Twitter / G+ updating every hour? Do you have news feeds continuously updating as well?
I have to agree with the poster above. Get Better Battery Stats and find the culprit draining your battery and work from there.

biggest thing draining the battery is the screen.
you can literally watch the battery usage drop 10-15% in a period of 10 to 15 minutes which is absurd when its set to low.
Sent from my SGH-T989D using XDA

Wait for kernel development. Its underway as we speak. It will make a significant difference.
Some battery saving tips:
- use juicedefender and set it to aggressive mode.
- use romtoolbox or other programs to underclock cpu frequency.
- also try using telus stock ics. Very good battery life.
Sent from my SGH-T989D using XDA

I have a brand new T989D (I'm new to Android, former iPhone user) and got the ICS upgrade the day I got it (9 days ago). Battery life is terrible, I'm lucky if I get 10 hours of moderate usage. The phone also tends to run very, very hot. Sometimes apps freeze and all I can do is either wait or, in some cases, remove the battery to reboot.
I'm open to any tips that will get this fixed! I haven't rooted yet (no time). I think I will try those wipe tools and reflash the stock ICS ROM.
First post btw - glad to have joined XDA!

Rooting takes 5 seconds. Follow the sticky. Use odin.
Run a custom rom.
Sent from my HTC Vision using xda premium

Android_Monsters said:
Rooting takes 5 seconds. Follow the sticky. Use odin.
Run a custom rom.
Sent from my HTC Vision using xda premium
Click to expand...
Click to collapse
Thanks, although a lot of howtos seem to be for GB since ICS only landed 9 days ago. Also there's a lot of conflicting information, so I prefer this one:
http : // galaxys2root.com/t-mobile-galaxy-s2/how-to-root-icsgb-on-t-mobile-galaxy-s2-sgh-t989/
Aaaannnd... rooted! \o/

anomy13 said:
Wait for kernel development. Its underway as we speak. It will make a significant difference.
Some battery saving tips:
- use juicedefender and set it to aggressive mode.
- use romtoolbox or other programs to underclock cpu frequency.
- also try using telus stock ics. Very good battery life.
Sent from my SGH-T989D using XDA
Click to expand...
Click to collapse
phone is a telus phone so its already using that rom.
setcpu us setup already but thinking perhaps to undervolt
Sent from my SGH-T989D using XDA

Stock, not rooted, my battery life is great. Something is using your battery up, and flashing some exotic kernel isn't going to change that. The stock kernel works fine. You'll want to find the root of the problem. Keep a real-time (or 1-5s interval anyway) eye on the phone's current (mA) usage, and when it's high for no apparent reason, you'll know that whatever is sucking your battery is doing it right then. That should help you characterize the problem. I've noticed when my WCDMA/GSM radio signal sucks, so does the battery life, so I either turn off the radio or switch to GSM only when I'm in that area. If your display is what's eating your battery, well a kernel can't stop that. Turn the brightness down, leave it on auto-brightness, or just deal with it if you need the display on all the time. But if tweaking and modding makes you happy, by all means...

firebane said:
biggest thing draining the battery is the screen.
you can literally watch the battery usage drop 10-15% in a period of 10 to 15 minutes which is absurd when its set to low.
Sent from my SGH-T989D using XDA
Click to expand...
Click to collapse
I have the same complaint. The "screen" battery usage is just unacceptable, especially compared to GB. My phone has been draining from a full charge for ~4.5 hours and my screen usage is 70% and battery is down to 65% with hardly 10 minutes of screen-on time.

I use an app called autostarts and you basically enable/disable apps that start running when certain events happen (phone startup, wifi being turned on, incoming call/sms/mms, other apps turning on, etc.). Just make sure you do your homework so you dont disable something critical. Hopefully this app works on ICS. You'll be surprised what different events make certain apps turn on automaticly. Screen, data/wifi, gps and bluetooth are the biggest battery drainers. No matter what Rom you are on if you don't keep control of those items your battery will drain fast. Keep ur screen on auto, let it go off @ 15 seconds ( you have to be pretty used to your phone for that setting not to annoy you), turn OFF your data or wifi when not in use. With bluetooth and gps...well u know that when you use them your battery is gonna drain faster than normal...just keep that in mind. Its all pretty much common sense.
I'm not going to tell you how much battery time I get cuz its nonsense. There are times my phone lasts till the next day and others Im charging it by sundown. Then again Im still on Juggs n Darkside kernel and Im gonna wait a bit still b4 I make the switch. Also don't go by what other people say on battery life cuz if you might not get the same results on that ROM. Everyone of our devices is unique and acts different. Everyone user uses their phone different. You can't define "light, moderate, heavy" use so don't go by that either.
Sent from my Blutiful SGSII w/Juggs.

Duel core vs single core
Larger brighter screen
Processor is clocked higher
Radio is connected to hspa+ network
Tw vs Samsung.
These things make a difference
Sent from my Galaxy Nexus using xda premium

After upgrading to ICS stock unrooted battery life sucked (5-6hrs). I did the whole remove battery, factory reset and still sucked.
Broke down rooted (still stock), downloaded batterycalibration from play, followed the instructions. Easily get over 24hrs before having to charge again. and when I say easily, I mean I still have over 25% left.

Get a gnex extended....maybe a bad battery
Sent from my SGH-T989 using xda premium

AOKP build 40, latest eugene373 streamline kernel. I went 9 hours earlier it earlier and it was still at 70% You will see a difference!!
Sent from AOKP Goodness :-D

mrrobc97 said:
Im not going to tell you how much battery time I get cuz its nonsense. .........Everyone user uses their phone different. You can't define "light, moderate, heavy" use so don't go by that either.
Click to expand...
Click to collapse
Bingo. Vastly different battery life between ROM's is generally BS. Every once in a great while one of these threads has merit but typically someone saying ROM X had "Killer" battery life is clueless and drinking the koolaid. Then a placebo effect takes place. And definitely someones "Heavy" use is subjective. If someone says they get a day out of an android phone they are not heavy users by my definition. It doesn't happen with heavy use. Perhaps the Razr Maxx or another phone with a very large battery but I've had 5 Android phones. If I get past noon it's because I am not using my phone that much and forget about a full day. It's never happened in the 4 years I've used google OS phones. Never.

jonjon68 said:
Bingo. Vastly different battery life between ROM's is generally BS. Every once in a great while one of these threads has merit but typically someone saying ROM X had "Killer" battery life is clueless and drinking the koolaid. Then a placebo effect takes place. And definitely someones "Heavy" use is subjective. If someone says they get a day out of an android phone they are not heavy users by my definition. It doesn't happen with heavy use. Perhaps the Razr Maxx or another phone with a very large battery but I've had 5 Android phones. If I get past noon it's because I am not using my phone that much and forget about a full day. It's never happened in the 4 years I've used google OS phones. Never.
Click to expand...
Click to collapse
Yes exactly, I hate when people post screenshots of their phone getting 24+ hours, I'm there thinking "well obviously they don't use their phone alot". There is no way in hell i could get 24 hours no matter what rom/kernal I use. Im just happy when my phone can make it till I get home at night
Sent from Flip's SGS2

[Q] Battery Issue into Crash (probably) ?!

Hey guys
I've been using custom roms for while,when i suddenly realize i have some Crash -
Issues with my
Samsung Galaxy W 4.1.2
Currently Using the Parandroid 2.99
with a 2.6.35.14 CM Kernel by camcory
It simply crashes after a while using it,when i reboot it it shows that my battery has maybe 30 percent or less left.
Waiting 2 minutes my battery shows 67 % for example when i try to use i then it crashes again... or even freeze... *sigh
however i tried flashing a new rom ; wiping the davlik cache ; and wipe battery reset , it still doesnt help...
Does anyone have an Idea where the problem is or better how to fix it??
P.S sry when this thread is posted wrong ,im new here rly couldnt find a topic which suit for this
(btw funny Im a noob Video )
greetz thevuhu

i think u need new battery

A good suggestion is you going pristine, unless your battery is fat, then change your battery.
My phone usually have these problem too, its 96%, I flash something new, wipe stuff, goes into launcher its 14%.
But mine doesn't crash.
Does this happen to other ROM?

Thank you for your help so far
im not sure if my battery is fat or not , well i have to admit it doesnt look that perfect anymore , cuz its slightly "blown up"
do u mean that with fat??
Does this have any dangers for me or the hardware of my galaxy?
yeah i flashed around 3-5 roms already... same issues with all , and it always crashes when i the ram usage is increasing , but as long as i kept my galaxy charging nothing happens at all...

TheVuhu said:
Thank you for your help so far
im not sure if my battery is fat or not , well i have to admit it doesnt look that perfect anymore , cuz its slightly "blown up"
do u mean that with fat??
Does this have any dangers for me or the hardware of my galaxy?
yeah i flashed around 3-5 roms already... same issues with all , and it always crashes when i the ram usage is increasing , but as long as i kept my galaxy charging nothing happens at all...
Click to expand...
Click to collapse
Yes, that's a "pregnant"/"fat" battery. Check if you can spin the battery easily on the tabletop.
A good battery is not just flat, it even has a small 'concave' surface.
When your battery can spin easily on top of a flat surface, it's time to buy a new one.
Sent from my GT-I8150 using xda app-developers app

ty very much
yeah its spinning very easy ... -.-
hard to believe that this battery just lived around 1 1/2 year long.
any expreriences / recommendation for the battery?
Should i take an original ?

TheVuhu said:
ty very much
yeah its spinning very easy ... -.-
hard to believe that this battery just lived around 1 1/2 year long.
any expreriences / recommendation for the battery?
Should i take an original ?
Click to expand...
Click to collapse
Usually a Lithium battery lasts only around a year, mine is only close to that and its slightly fat too.
Not compulsory, OEM is just as good as long as it doesn't look like its from China LOL(as a chinese I do not feel proud, but oh heck I'm not from China)

TheVuhu said:
ty very much
yeah its spinning very easy ... -.-
hard to believe that this battery just lived around 1 1/2 year long.
any expreriences / recommendation for the battery?
Should i take an original ?
Click to expand...
Click to collapse
Original is good, but the capacity is kind of small...
There's a thread in the Accessories subforum discussing a high-capacity 2900 mAh battery. Try take a peek there.
Sent from my GT-I8150 using xda app-developers app

[Q] SGW I8150 drain battery very very fast after i flashed it with CM-10.1 alpha6

i just flashed my samsung galaxy wonder to have CM-10.1 alpha6 a few days ago. and i realised that it drain battery very fast.. just simply fully charge it to 100% and left there with wifi,bluetooth and all applications off, yet the battery drained in half day..
if open 3G, the battery drain 30% in 20 minutes.
can sumeone tell me what's the problem and how can i solve it? thx a lots

Why don't you try to flash another kernel..
I personally recommend kernel by hurtsky, or by castagnaIT.
that's only my opinion..
you're welcome to try..

asy93 said:
......
can sumeone tell me what's the problem and how can i solve it? thx a lots
Click to expand...
Click to collapse
first, how old is your battery?
older than 1 yr, u should try getting a new battery.
mine was 1.4 yr old, battery drain when play game lasted 5 mins from fully charge to zero.

s3alon said:
Why don't you try to flash another kernel..
I personally recommend kernel by hurtsky, or by castagnaIT.
that's only my opinion..
you're welcome to try..
Click to expand...
Click to collapse
thx..btw, can i know how to flash kernel..? i am a newbie and i know no much regarding these..thx for help anyway :laugh:

asy93 said:
thx..btw, can i know how to flash kernel..? i am a newbie and i know no much regarding these..thx for help anyway :laugh:
Click to expand...
Click to collapse
Well..
It's just the same way like how you flashed the cm10.1 rom..
Try to head to this page:
http://forum.xda-developers.com/showthread.php?t=2218087
There's also an instruction on a proper way to flash it..
And don't forget to thanks him if you like his kernel

CM10.1 aka Android 4.2.2 uses higher voltage compared to CM10 and CM9(especially CM9).
So its understandable. But in CM10.1, SGW can use 1.0Ghz and still fluently do a lot of things.
Try underclocking and undervolting.

asy93 said:
i just flashed my samsung galaxy wonder to have CM-10.1 alpha6 a few days ago. and i realised that it drain battery very fast.. just simply fully charge it to 100% and left there with wifi,bluetooth and all applications off, yet the battery drained in half day..
if open 3G, the battery drain 30% in 20 minutes.
can sumeone tell me what's the problem and how can i solve it? thx a lots
Click to expand...
Click to collapse
try to consider the age of your battery, your lcd revision , and usage.

dec0der said:
try to consider the age of your battery, your lcd revision , and usage.
Click to expand...
Click to collapse
agree..alpha 6 still not in revert kernel..maybe your lcd is the main cause drain your battery..
Sent from my GT-I8150 using Tapatalk 4

I have CM 10.2 everythings is ok..battery consumption is depends from life time of your battery then the number of apps and services activated...

Change to new battery
hmmm.... maybe it's because of your battery.. from my experience , you should buy new battery if the battery is used more than 1 year... i had experinced before when my battery drain faster, after i bought new battery.. the problem solved...

Guys. Stop telling him it´s the battery. If it were the battery the draining would be already that fast before flashing CM10.1, but not just after.
A bloated and aged battery can of course be the reason, but this doesn´t have to be always the case. My stock Samsung battery is already 2 years old but working like new. However I have to admit that I don´t use it that often. Having here 3 batteries I´m changing them regulary every few months.
This draining will be more related to the LCD version in his phone, which he should read about and check before flashing a CM10.1 based rom. Additionally the recent Google updates can cause even more battery drain than the LCD Rev.3 issue alone, which has to be taken also into account.

Battery drain

For those of you who install a ROM should know that when a ROM is new it has a settled down period and you have to wait a couple days to a week for good battery life again... That's why every time a new update comes out the first thing everybody says is oh this update is so bad the battery drain is so bad.... Like clockwork every update everybody complains about the battery please wait a week before you start complaining about the battery... And especially if you are on a custom ROM and you switch to the factory ROM then you're going to notice a difference in battery life anyway...
Sent from my SM-N900T using XDA Premium 4 mobile app

djtheraven said:
For those of you who install a ROM should know that when a ROM is new it has a settled down period and you have to wait a couple days to a week for good battery life again... That's why every time a new update comes out the first thing everybody says is oh this update is so bad the battery drain is so bad.... Like clockwork every update everybody complains about the battery please wait a week before you start complaining about the battery... And especially if you are on a custom ROM and you switch to the factory ROM then you're going to notice a difference in battery life anyway...
Sent from my SM-N900T using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I have always heard this..
you have to wait a few days to get good battery life..
but why??
what is the phone doing that is draining the battery, that it wont be doing after a few days.
I would think the battery would get worst, the longer you had a rom.. because as time goes on.. you would be adding more apps that would eat up your battery more..
but why do the battery sucks at the beginning??

I think it is because when programs are run for the first time the system creates and caches optimized code. This extra work for each program causes more drain.
Frank

bigdreco said:
I have always heard this..
you have to wait a few days to get good battery life..
but why??
what is the phone doing that is draining the battery, that it wont be doing after a few days.
I would think the battery would get worst, the longer you had a rom.. because as time goes on.. you would be adding more apps that would eat up your battery more..
but why do the battery sucks at the beginning??
Click to expand...
Click to collapse
Simply put, it's indexing, caching, aligning, etc. it takes a while to do all that.
Sent from my leanKernel 2.5.1 powered stock 4.4.2 (NE6) SM-N900T

There is already a thread to discuss battery life in this forum http://forum.xda-developers.com/showthread.php?p=46266927
Please continue within that thread no need to open new ones.
Sorry for the inconvenience.
EFM
Have a great day!

Samsung galaxy S4 mini battery drain!

Hi everybody...I have this phone and I have a problem.When I charge the phone up to 100% battery and then take it from the charger,battery drops to 99 or less without phone usage...And when I go to sleep and then wake up,the phone lost about 10-15 percent...Can somebody plesase help me?

Check what's keeping your phone awake during idle, "wakelock detector" and "better battery stats". Though you need root for these. You've nor given us any details of what your phone is and what ROM?? Try searching for threads on how to calibrate your phone battery.

Ohh sorry...My phone is S4 mini GT-I9195 LTE....I have stock android 4.4.2 kitkat...I have already calibrated battery and bought new battery...But same problem...

Will be an app causing your phone to wake

I dont know...i searched on the web and someone said that stock kernel have some problems

gamer1182 said:
I dont know...i searched on the web and someone said that stock kernel have some problems
Click to expand...
Click to collapse
Not always the case... Depends when and where your phone was made. Could be a faulty kernel or motherboard but it also could be an app or a setting on your phone or an unclean install. Have you always suffered this issue?

I got phone about 3 weeks ago...and the battery was very bad so i bought new one.I also tried CM 12.1 but the phone is heating in unnormal way but the battery there is better...

You have problems with motherboard. Go to service center to replace it on waranty.
Powered by CM12.1

But my phone isnt on waranty...i got it used haha....ahh nvm,i will live with that problem.thanks for help!

Bad luck then. Normal consumption for our device is 0.2 - 0.3 % per hour in stand by.
Powered by CM12.1

How long does yours battery last with some normal usage?

Almost 3 days with moderate usage.
Powered by CM12.1

Woww thats a very big difference haha.

gamer1182 said:
Woww thats a very big difference haha.
Click to expand...
Click to collapse
Your best bet seeing as unless you pay for a new motherboard is to try one of the battery drain fix kernels on here. Though I think you may be limited to certain compatible ROMs.

Why are you not staying on cm 12.1? For me it's amazing, i observed at least 100% more battery efficiency than stock (4.2.2). I also observed the same problem with high temp too. But i think we can't have it all. When i play games and the outside temperature is about 35 celsius, i do not expect anything less, because this mobile is not designed for this android version. I think that's reasonable and i finally can use my mobile with a joyful way without having my mind always on the battery stats!
Sent from my GT-I9195 using XDA Free mobile app

Thanks guys! And i will try CM 12.1 for longer time to see if anything will be better!