Develop Bugs

Battery Drain after OTA Froyo

I have no idea how to solve it. I have charged my Desire to 100% and after 3 hours I have only 20% left. I have not been using it much. Before upgrade it took about 24h to be only 20% left... Moreover the phone is hot when I touch it. How to solve it...?
Sent from my HTC Desire using XDA App

I'm having the same issue!
It seems that the phone does not go to sleep (up time same as awake time)
Any help is appreciated as my phone dies within hours

Mine has done the exact same thing... With in approx 3 hours it had gone from 100% down to 50%, in the same normal usage in 2.1, it would of been lucky to drop 15% if that!!!

Mine dropped from 45% when i went to sleep, to 0 this morning!!
----------------- ----------------
Sent vía XDA Tapatalk app

I cannot reproduce this, my battery life is a little better than with Eclair. However, I'd recommend downloading Android System Info from market. In the CPU Panel, you have the statistics of CPU clocking, it should give you heads up concerning a phone not going to sleep.
As for reference: my phone's CPU runs at 250 MHz 85% of the time, 1 GHz for like 10% and the rest is somewhere in between.
If you find anything, you should consider downloading Auto Task Manager as well and try killing anything unnecessary. It is not recommended to be using a Task Manager, but it might help in this case. Good luck!

Wich one?
There are 2 with same name. Google's and an other one
----------------- ----------------
Sent vía XDA Tapatalk app

Did you all restart after reboot? And did you flash the latest radio?
I flashed to froyo 7 hrs ago, played an hour with it to see the new features and went to bed and woke up still 80% of battery (after mentioned 7hrs, 6 of which my phone and i were sleeping )

Seems to be 245 mhz 50% of the time and 1ghz around 40% of the time, the problem is that I can see that my phone isn't going to sleep according to the battery info

The new radio is already flashed with froyo, isnt it?
And how do you flash a radio without rooting?
----------------- ----------------
Sent vía XDA Tapatalk app

Have you tried a factory reset aka hard reset? It could also be some app that keeps the phone awake.

eddyther said:
Wich one?
There are 2 with same name. Google's and an other one
----------------- ----------------
Sent vía XDA Tapatalk app
Click to expand...
Click to collapse
The one from ElectricSheep. The other one is probably not from Google, but from Googe. I'd also recommend looking at battery draining apps in the settings (certain bad live wallpapers can harm battery).
As said before, if you aren't using your phone all time and CPU clock at 250 MHz is less than 80% of the time, something is seriously wrong.

I have the same issue..
After froyo update, the battery lasts only a few hours not even using the phone much. If i put in flight mode the battery not discharge ..
I think it's a problem with radio and not of applications. I already tried hard reset..
Moreover, the phone become very hot..
I hope the htc resolve the problem. I'm in holiday
excuse me for my english

kreci said:
I have no idea how to solve it. I have charged my Desire to 100% and after 3 hours I have only 20% left. I have not been using it much. Before upgrade it took about 24h to be only 20% left... Moreover the phone is hot when I touch it. How to solve it...?
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
mine is the exact opposite. battery seems a lot better after hours of wifi browsing and updates it seems to be holding out better.

Thks rant, using 50% at 980 Mhz but i use it all The time now.
Will wait for a full day for statistics
----------------- ----------------
Sent vía XDA Tapatalk app

jaztim said:
mine is the exact opposite. battery seems a lot better after hours of wifi browsing and updates it seems to be holding out better.
Click to expand...
Click to collapse
Same to me! I suppose your batteries are out.. maybe bad from the start? Better check it with customer support..
Sent from my HTC Desire using XDA App

jaztim said:
mine is the exact opposite. battery seems a lot better after hours of wifi browsing and updates it seems to be holding out better.
Click to expand...
Click to collapse
I think HTC did good work here, but I'm sad to hear other people are having issues. Anyhow, I don't think our impression of better battery life is purely due to real improvements, but also because they fixed the battery icon (like Apple did with the signal, but in the other direction...).
Prior to FroYo, my battery icon would look like "50%" when there would still be like 75% power, "90%" would look like 75% and so on. I noticed that when I tried several battery widgets. You know, it's all psychological

I had 55% yesterday night and at the morning i had 49%
idk if its bad or good

Found the problem!!! It was an LED widget stopping my phone from going to sleep, if you have it make sure to get rid of it ASAP!!!
Cheers guys!!
Sent from my HTC Desire using XDA App

Please tell us which one, what is it called!
And please send the dev a message, so he/she can fix it, seems like a nice thing to do at least

It was called LED light by picolyl
Sent from my HTC Desire using XDA App

How to reduce battery drain while using rom?

Hi. Battery drain in sleep mode is really good. Around 0.5 % an hour. But when using 3g internet, battery drain is massive, around 3% per minute. My friend was using his iPhone with similar usage to mine, his drained from 75% to 50%, mine drained from 73% to 20%!
I have brightness on low, GPS and Bluetooth off, and I am using radio 26.13.04.19 which is one that I have found to be good and reliable. Is there anyway to reduce my drain? It's way too much right now. Thank you!
Sent from my desire hd using XDA

3% per minute while screen is off means your phone isn't going into sleep mode.
I guess there's an app that keeps your 3G modem active.

Dlog said:
3% per minute while screen is off means your phone isn't going into sleep mode.
I guess there's an app that keeps your 3G modem active.
Click to expand...
Click to collapse
No, I think you misunderstand. 3% per minute while using my phone (ie: when screen is on). Like I said, when screen is off, drain is only 0.5% per hour.

Try to switch to EDGE, I had it too before. The drain was caused by a bad and cell tower signal. By switching to EDGE the signal went better, same as the battery drain. Only uses 3G if you're signal/reception is good(above 3 bars).

you can turn off Wifi GPS BT and of course the screen brightness .
iyou need to activate sleep mode beacuse when in this mode you almost dont have battery drain ....

guandms said:
you can turn off Wifi GPS BT and of course the screen brightness .
iyou need to activate sleep mode beacuse when in this mode you almost dont have battery drain ....
Click to expand...
Click to collapse
You read before you answer? He said BT, gps and WiFi are turned off and brightness is low.
Which Rom are you using?
Sent from my Desire HD using XDA

Try different ROM or keep RADIO with corresponding RIL.
Im on Coredroid and battery life is good.

shino82 said:
You read before you answer? He said BT, gps and WiFi are turned off and brightness is low.
Which Rom are you using?
Sent from my Desire HD using XDA
Click to expand...
Click to collapse
Currently using IceColdSandwhich
dzuva said:
Try different ROM or keep RADIO with corresponding RIL.
Im on Coredroid and battery life is good.
Click to expand...
Click to collapse
I've tried loads of different roms, I don't think that the ROM is the problem.
I'm not using a sense rom right now, so RIL doesn't matter.

Jesus. I just spent 1 minute on facebook and had 4% battery drain! Using mobile network (getting 3 bars of 3g signal). Why does android have to do this to me. I'm jealous of iphone battery life

2-3% per minute during 3g session is pretty normal ,even I am having the same drain ,I have spent months and tried all the tricks in the book (uv script ,reduce CPU speed)to reduce the drain all my efforts have gone down the drain I think we have to live up with this sort of drain...
Sent from my HTC Desire HD with Beats Audio using xda premium

Did you make a full wipe before installing custom rom? I would do it then install another time. Afterward change your radio version and have a look at your battery behaviour.
Sent from my Desire HD using XDA

IceColdSandwich gives me the best battery life Ive ever had.
Just to make sure, is your battery old? Maybe like a year old?

i agree.
i've given up trying to solve my batt issues. i've got icecoldsandwich 6.1. BT,GPS and WIFI is always on. cellular data is on WCDMA preffered. under volted, under clocked and even low vibration mod. screen brightness is at 10%. still drains at 3% per min when using the data. i've got a brand new battery from HTC service centre during this time and it doesnt help. i even started to think that my charging circuit was screwed up :|
got really paranoid..
but i guess the battery drain is pretty normal given the battery capacity

There are some build.prop tweaks that you could try. Related to sleep mode and hsdpa power collapse. Look through this page and add whichever are network and battery saving related (mentioned). Look through your current /system/build.prop and only add what isn't already there. If it's already there, just change the values.
http://forum.xda-developers.com/showthread.php?t=1227269
Sent from my Desire HD using xda premium

Schimmel81 said:
Did you make a full wipe before installing custom rom? I would do it then install another time. Afterward change your radio version and have a look at your battery behaviour.
Sent from my Desire HD using XDA
Click to expand...
Click to collapse
Yeah I did a full wipe and I've used loads of different batteries
kush4u123 said:
IceColdSandwich gives me the best battery life Ive ever had.
Just to make sure, is your battery old? Maybe like a year old?
Click to expand...
Click to collapse
Yeah, I've had my phone for a year, and I'm still using the original battery. It's just unfair that iPhone users get such great battery
sashank said:
There are some build.prop tweaks that you could try. Related to sleep mode and hsdpa power collapse. Look through this page and add whichever are network and battery saving related (mentioned). Look through your current /system/build.prop and only add what isn't already there. If it's already there, just change the values.
http://forum.xda-developers.com/showthread.php?t=1227269
Sent from my Desire HD using xda premium
Click to expand...
Click to collapse
Thanks! I will try some of these.

To save my battery I have started to use Tasker, this is a profile manager. For example You can set up your phone to switch On Data and sync your apps every 30 min or more, instead of have it On all the time. There is a lot of options to set up your phone. For me it is working great and it helped me to lower daily battery drain. You can find other Profile Managers on Google Shop.
Wysłane z mojego HTC Desire HD za pomocą Tapatalk

g.zielin said:
To save my battery I have started to use Tasker, this is a profile manager. For example You can set up your phone to switch On Data and sync your apps every 30 min or more, instead of have it On all the time. There is a lot of options to set up your phone. For me it is working great and it helped me to lower daily battery drain. You can find other Profile Managers on Google Shop.
Wysłane z mojego HTC Desire HD za pomocą Tapatalk
Click to expand...
Click to collapse
That doesn't help with the 3% per minute while awake.
And switching data on every 30 minutes often means that you can forget using apps like whatsapp and viber. Most of the time people rely on messages arriving shortly after they were sent.
Image your boyfriend/girlfriend sitting outside in the car and texting you "hurry up! we need to go!!" and you get that message 30 minutes later....
And consider using Llama....it's mostly the same as tasker but free

There is an app called battery calibration that can help with battery life. It helped me

Have compared battery drain with different radios? Some radios I have tried give better signal with higher drain. The M2 one I am using now gives a nice balance but it may differ for depending on your location/reception.

Lewelynn said:
Have compared battery drain with different radios? Some radios I have tried give better signal with higher drain. The M2 one I am using now gives a nice balance but it may differ for depending on your location/reception.
Click to expand...
Click to collapse
Yeah, tried many different radios. Been using quite an old M2 one and it seems okay.

[Q] incredibly fast battery drain on xperia arc s.

Hi everyone. I've bought my new xperia arc s on Wednesday and unfortunately I'm very disappointed with the battery performance. It is worse than my 3 years old iPhone. I've read many advices in the internet concerning this issue, but none of them gave any improvement for me. I want to emphasize, that I switched off: wifi, auto-sync, GPS & wifi localization etc. My display is at 30% of brightness. The only functions which are turned on are: 3g network and background data.
However, my smartphone needs to be charged after around 10 hours of not very heavy using (web browsing, ca. 20 minutes playing games such as angry birds or cut the ropę and 20 minutes of listening music player.
Today's performance was just tragic: 5 hours of working (less than 3.5 hours of the turned on screen; only 3g connection on). What should I do to improve these results or maybe the battery is broken and I should send the phone to the warranty service?
Thanks for help
Sent from my LT18i using XDA

Wait a week, it improves
From my sexy LT15i

Of course I'll wait, cause I don't want to miss my phone, which looks and works amazingly great. But do you have any tips which would help me to increase battery performance? All I need is 3g or wifi constantly turned on for google talk and facebook messenger.
Sent from my LT18i using XDA

TheHaso said:
Wait a week, it improves
From my sexy LT15i
Click to expand...
Click to collapse
I using this for 4 months, still ~6 hours with usage, ~8 hours normal usage, 10~ hours no usage
Using doomkernel v19,stock .62, smartass v2 133~1400, undervolt 100mv
Even without using this kind of setting and kernel i still get same result
Sent from my LT18i using xda premium

maliceomalice said:
I using this for 4 months, still ~6 hours with usage, ~8 hours normal usage, 10~ hours no usage
Using doomkernel v19,stock .62, smartass v2 133~1400, undervolt 100mv
Even without using this kind of setting and kernel i still get same result
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
You scared me. I hope it'll get better. Guys, please write some tips to extend battery life. I know that my performance is not normal and I'm 99% certain, that it is a software issue. What am I doing wrong?
Sent from my LT18i using XDA

6franek said:
You scared me. I hope it'll get better. Guys, please write some tips to extend battery life. I know that my performance is not normal and I'm 99% certain, that it is a software issue. What am I doing wrong?
Sent from my LT18i using XDA
Click to expand...
Click to collapse
Anyhu, if ur battery does get better, dont forget to PM me
Sent from my LT18i using xda premium

maliceomalice said:
I using this for 4 months, still ~6 hours with usage, ~8 hours normal usage, 10~ hours no usage
Using doomkernel v19,stock .62, smartass v2 133~1400, undervolt 100mv
Even without using this kind of setting and kernel i still get same result
Sent from my LT18i using xda premium
Click to expand...
Click to collapse
Are you kidding me? It cannot be that bad.
My phone isn't arc s it's only arc but my battery lasts over 24 hours.
I run wifi and 3g always, usually there's over 1h of calls some web surfing and stuff. With this kinda usage it normallly last something like 36h. If i don't use phone it's over 48h.
You should check what has been using the battery.

Muurahainen said:
Are you kidding me? It cannot be that bad.
My phone isn't arc s it's only arc but my battery lasts over 24 hours.
I run wifi and 3g always, usually there's over 1h of calls some web surfing and stuff. With this kinda usage it normallly last something like 36h. If i don't use phone it's over 48h.
You should check what has been using the battery.
Click to expand...
Click to collapse
I don't know how it's possible. I have only 3g data transfer turned on, while everything else is turned off. I checked in settings and it is screen which consumes 60%-70% of energy in my case. Is it normal? Moreover, could you tell me what is your maximum time of the screen turned on achieved without loading the battery?
Sent from my LT18i using XDA

Muurahainen said:
Are you kidding me? It cannot be that bad.
My phone isn't arc s it's only arc but my battery lasts over 24 hours.
I run wifi and 3g always, usually there's over 1h of calls some web surfing and stuff. With this kinda usage it normallly last something like 36h. If i don't use phone it's over 48h.
You should check what has been using the battery.
Click to expand...
Click to collapse
Not kidding. Usually if i dont touch the phone, just the normal stuff that use the battery (display,idle etc.)
I use an app called my battery drain analyzer and it shows even when in idle the battery lose about 7%-8% in an hour.
Sent from my LT18i using xda premium

Ill give u few suggestions
Turn the screen brightness to 30 40 % this will give you 4 5 hours more of stand by
Turn off 3g(data internet) it eats as much battery as the screen,use when u need it 4 6h more on stand by
GPS turn it off lol u dont need it to be turned on all the time,use it just when u need it
Im using this setup for 2 months not and its awesome im on 54% battery and the phone is charged before 21h.. i will have 30 + for sure

gogobaba said:
Ill give u few suggestions
Turn the screen brightness to 30 40 % this will give you 4 5 hours more of stand by
Turn off 3g(data internet) it eats as much battery as the screen,use when u need it 4 6h more on stand by
GPS turn it off lol u dont need it to be turned on all the time,use it just when u need it
Im using this setup for 2 months not and its awesome im on 54% battery and the phone is charged before 21h.. i will have 30 + for sure
Click to expand...
Click to collapse
Thanks for the suggestion,i already did that. Its common sense not to open those battery consuming stuff if i dont need it. Anyhu, its still the same
Sent from my shakira using xda premium

maliceomalice said:
Thanks for the suggestion,i already did that. Its common sense not to open those battery consuming stuff if i dont need it. Anyhu, its still the same
Sent from my shakira using xda premium
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1433309
this will help you identify the culprit.
Pvy

Hi, just some suggestions.
1. Do you use latitude?? That puts a huge dent in your battery.
2. Do you travel around during the day?? I find that my battery drops a lot quicker when the phone is forced to switch between towers a lot.
3. Try and check the date of manufacture on your battery, It may be old.
4. Did you properly condition your battery when you first got the phone (Takes about a week to do it right but well worth it in the long run)
5. See if you can borrow some one else's battery for a couple of days and see if it makes a difference?? (Isolation testing its called)
Or you could just have a bad battery, that happens.

baylock said:
Hi, just some suggestions.
1. Do you use latitude?? That puts a huge dent in your battery.
2. Do you travel around during the day?? I find that my battery drops a lot quicker when the phone is forced to switch between towers a lot.
3. Try and check the date of manufacture on your battery, It may be old.
4. Did you properly condition your battery when you first got the phone (Takes about a week to do it right but well worth it in the long run)
5. See if you can borrow some one else's battery for a couple of days and see if it makes a difference?? (Isolation testing its called)
Or you could just have a bad battery, that happens.
Click to expand...
Click to collapse
I always thought i have a bad battery.....maybe thats why
Sent from my shakira using xda premium

6franek said:
I don't know how it's possible. I have only 3g data transfer turned on, while everything else is turned off. I checked in settings and it is screen which consumes 60%-70% of energy in my case. Is it normal? Moreover, could you tell me what is your maximum time of the screen turned on achieved without loading the battery?
Sent from my LT18i using XDA
Click to expand...
Click to collapse
I'm not sure how much my screen uses battery. I haven't evaluated screen always on usage.
I'm running currently at 46% 23h 3m 54s
voice calls 38% (1h 5m 20s)
wifi 19% (23h 3m 54s)
cell standby 14% (23h 3m 54s)
phone idle 12% (21h 45m 47s)
display 11% (47m 32s)
after these come other less significant stuff like Android OS, Android System, Web browser etc.
In my use are: DoomKernel v20 undervolted -75mv and Juice Defender.
I have also removed many softwares that are useless for me like support.apk etc.
---------- Post added at 12:35 PM ---------- Previous post was at 12:32 PM ----------
maliceomalice said:
I always thought i have a bad battery.....maybe thats why
Sent from my shakira using xda premium
Click to expand...
Click to collapse
It must be bad battery. If no apps are draining your batt.

read this thread get the betterbattery stats and check it
http://forum.xda-developers.com/showthread.php?t=1433309
it will identify it down to a specific app or a module in the kernel, where the drain is coming from.
Pvy.

pvyParts said:
read this thread get the betterbattery stats and check it
http://forum.xda-developers.com/showthread.php?t=1433309
it will identify it down to a specific app or a module in the kernel, where the drain is coming from.
Pvy.
Click to expand...
Click to collapse
Yeah..i already use that before. I only see the basic app that i use and some system app. The system app only working for like a few seconds. Well, i might try for a couple days, and if its ok, can u have a look at the report log?
Sent from my shakira using xda premium

Man, this is a problem that occours in every android phone, even those ones which have a more powerful battery.
I use an Arc S overclocked (but not too much) and the battery lifes varies a lot, depending on which kernel and which rom I use. The best battery life i've find so far was DoomKernel ICS v4 with Arconium ICS v5. But it was a little bit laggy and now I'm using KA13 with the same kernel. The battery life is not bad, but not really good.
Sony knows this issue and I'm sure they're working in order to fix this on the official release of ICS. Just wait

Sent from my LT18i using XDA

changing kernels usually helps

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

Battery Drain

Is there an app or way that conserves the battery power. The phone is still completely stock but it received a firmware update through Tmobile and ever since then the battery gets drained by 4 pm (after all apps are x-ed out and phone is just in standby) the batter drops to around 30 percent... what can I do? I don't think it needs a new battery since its only a few months old... suggestions?

SLP Catalyst said:
Is there an app or way that conserves the battery power. The phone is still completely stock but it received a firmware update through Tmobile and ever since then the battery gets drained by 4 pm (after all apps are x-ed out and phone is just in standby) the batter drops to around 30 percent... what can I do? I don't think it needs a new battery since its only a few months old... suggestions?
Click to expand...
Click to collapse
I dont know how much you use your phone and weather or not you watch movies or download files with Wi-Fi alot but it could seriously drain your battery if you leave things like Wi-Fi, Bluetooth, NFC, Brightness Up, or use live wallpapers.
If not, I would recommend checking your battery against someone elses because I've had a phone before that had a bad battery that could explode and caused me to have battery issues. Make sure your battery isnt swollen at all and if it is make sure you take it out and dont put it back in and go to a Battery+ store nearby and I'm sure they got one for your phone (they come with warranty).

Well my wife and I have the same phone and it does it to both. I don't have signal in my job since they have a Verizon antenna and it blocks our t mobile signal so I don't use it during the day which means the phone is just on stand by for the first eight hours. I make sure I turn off wifi, blue tooth, GPS etc and close all apps....but by the time I get out of work it's at 30-40% power.... both phones were bought this April so was hoping it wasn't/isn't a hardware issue and have to replace the batteries....
Sent from my SGH-T989

This is where the world of rooting and tweaking your android becomes extremely attractive.
There are ROMs that last 1 day + ( that's 24h+ hours of battery)
Only need two things....
1. Patience - to sit, read and closely follow instructions
2. Guts - to take a dive and risk ruining your phone. (Which doesn't happen if you have number 1)
Sent from my SGH-T989 using xda app-developers app

thanks for the reply. Yeah I've been thinking about doing such things, but am a complete noob. Is there a link to a tutorial (from start to finish) on rooting/flashing custom rom in here? All I see is one or two step threads or discussions on different roms?

SLP Catalyst said:
thanks for the reply. Yeah I've been thinking about doing such things, but am a complete noob. Is there a link to a tutorial (from start to finish) on rooting/flashing custom rom in here? All I see is one or two step threads or discussions on different roms?
Click to expand...
Click to collapse
Try this.
http://forum.xda-developers.com/showthread.php?t=1650908
Or this ( more thorough and noobish)
http://theunlockr.com/2011/12/01/how-to-root-the-samsung-galaxy-s-ii-all-versions/
Sent from my SGH-T989 using xda app-developers app

1. juice defender is a start.
The rest all needs rooting really.
2. Build.prop tweaks
3. UV with a custom kernel
4. Lowest screen brightness (doesn't require root)
5. Restrict yourself to 2G networks either using AOKP settings or a build.prop tweak
There are others but this is how I achieve great battery times mostly.
Sent from my SGH-T989 using xda app-developers app

TheLastSidekick said:
1. juice defender is a start.
The rest all needs rooting really.
2. Build.prop tweaks
3. UV with a custom kernel
4. Lowest screen brightness (doesn't require root)
5. Restrict yourself to 2G networks either using AOKP settings or a build.prop tweak
There are others but this is how I achieve great battery times mostly.
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the info:thumbup:
Sent from my SGH-T989

SLP Catalyst said:
Thanks for the info:thumbup:
Sent from my SGH-T989
Click to expand...
Click to collapse
Why not try and find out what is using your battery up first? Try GSAM from the play store, its free for one, easy to use, it will show you what is draining your battery, there are a few paid ones as well, but try the free first , HERE is the direct link to GSAM.
or QR code, just scan it with phone.

SLP Catalyst said:
Well my wife and I have the same phone and it does it to both. I don't have signal in my job since they have a Verizon antenna and it blocks our t mobile signal so I don't use it during the day which means the phone is just on stand by for the first eight hours. I make sure I turn off wifi, blue tooth, GPS etc and close all apps....but by the time I get out of work it's at 30-40% power.... both phones were bought this April so was hoping it wasn't/isn't a hardware issue and have to replace the batteries....
Sent from my SGH-T989
Click to expand...
Click to collapse
That is a very weird situation and try a app that shows the apps using battery. Even check the stock android battery section in settings and see whats getting used. Your brightness should be first since it can really eat your battery if its turned up. I dont think its defective since both your phones are having the same problem but both my parents have the 4.0.4 firmware installed on their T989's without a problem and get decent battery power. I however am using a custom rom with kernel. Did you use the same battery for each phone? or each phone has the same problem with their own devices and their own batteries when getting updated to 4.0.4? If you used your battery on her's I'm assuming the problem may be the battery and you just got unlucky with a defective one.
P.S. I'm assuming 4.0.4 because thats the latest update to ICS for the T989 on T-Mobile.

The battery manager that comes with the phone identifies the display, but I've set it to lowest setting and have a dark background. And yeah both phones have their respective batteries which makes me think it's a software issue.. We just upgraded to the 2.3.6 ( I guess t-mobile is a but behind lol). But I going to try the juice defender tomorrow... It's just while I root the phone and get a custom ROM... (doing my homework before doing anything since it'll be first time)
Sent from my SGH-T989

Those apps wont really help, it basically does what you can do manually, turning off settings or putting them at low usage. Rooting is the way to go, its rather simple, once you do it, you will have wished you done it sooner. Trust me, I was in the same boat, I had just got my phone last december, the wife and I were in Vegas and my battery was horrible, I was taking lots of pictures and video, but my battery was dying. I had no way to charge it til we got back to the hotel, next day was same thing, horrible battery, this was all before ICS even was around for this device. When I got back home, I rooted my phone, to date, I have gotten a best 44 hours out of the phone. I ROM hop so I try out the variety, there is how to's and videos here and youtube, you will kick youself on how easy it truly is to root and flash. GSAM will show you in more detail what is using your battery the most, good luck with whatever you choose to do. There are many people here who can help you along the way, thats what this site is for.

Juice Defender will help a ton with you're screen being off for extended periods of time. Normally without it, I lose 30% at work without touching it. Today, I have lost 6%. The margin won't always be like that but it's a sizeable difference. Also, I have an app monitor application you can use to track rogue apps. There is also this app called Autostarts where you can disable an app from opening and it's really useful for apps that you don't need running in the background. Turning off auto sync will help as well IF you are okay with not getting every email in 5 minutes.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app