Battery drain even in Airplane mode (SGS2)

[abhiroopb]

I know this issue has been beaten to death, but none of the proposed suggestions seem to work for me and my problem may be fundamental to the device itself.

Essentially, I have to keep my phone charging for virtually the whole day. The battery drops extremely quickly when I am using it. I suppose it is a smartphone and I do use it a lot, so I can live with this.

What is worse, however, is that at night when I dock my phone (and use the Bedside (Night Clock)) the phone still loses its charge and the battery drops at a rate of about 10% every hour. So, when I wake up in the morning, the phone is almost dead.

Any thoughts on what the problem could be?

I am on the KE7 firmware (which is apparently the latest in Singapore).

 

[fontburn]

My first s2 had heat issue, my replacement s2 just ate battery with "android OS" using 98% of battery. Got mine replaced just an hour ago. Hopefully this one is the one. My collegue has the S2 and has had no problems.

I tried soft resets, clearing caches, clearing widgets, uninstall all apps i could (back to stock), one homescreen, all wifi,gps,bt,sync,data,rotate all off. Nothing solved my issue.

 

[abhiroopb]

Hopefully, it is the battery, because if it is being drained on airplane mode it can't be anything else.

 

[abhiroopb]

I have changed my battery but nothing has changed. When I am not using the phone. The battery drops by about 10% every hour. So no matter what I do with the absolutely maximum the phone will last is 10 hours. Of course since I us the phone it usually lasts about five hours between charges. What's really strange is that I spent an hour on the phone today and the battery dropped by 5%. Is there any reason why the battery may drop more while I the screen is off an the phone is not being used?

 

[stranzer]

i think this is a normal problem......this happened to me also...for the 1st 3 days i got really frustrated with battery drain then after that i rooted and installed villain rom..now i loose only 2% for the whole day if i dont use it......if u have not rooted ur device...try to reduce the brightness to 0 when u r indoors...and use auto brightness outdoors....take out live wallpapers... and use wifi and data connection when u want to use otherwise switch off them....wifi and gps drains ur battery....if u root ur phone install setcpu app ..and underclock ur cpu speed to 800 mhz....this will help u a lot...

 

[abhiroopb]

Thanks, I still don't want to fall into the camp of switch everything off to conserve battery, but I did try putting it in airplane mode one night and the battery still dropped periodically. So, last night I uninstalled all my apps (as suggested by someone) and the battery seems to have worked much better. So, it is probably one of the apps.

 

[Deleted User]

I love this phone, but the battery life is the worst. I've been playing with my phone for about 3-4 hours today and I'm down to 40% (from 100%) - I haven't done anything out of the ordinary, just reading Feedly, listened to a couple of podcasts, and surfed the web.

My iPhone never lost so much battery so quickly and this might drive me back to iOS if the iPhone 5 comes out and has good battery life. For one, the iPhone audio playback is ENORMOUS by comparison (e.g. 40hrs on iPhone vs 4hrs on GS2).

I'm trying to hold out until Android 2.3.4 comes out because I am hoping that it will magically solve this problem (perhaps by handling dual core hardware better?), along with the 'wifi sharing' bug which just completely drains the phone if you don't catch it in time using WatchDog or something similar - pathetic problems for a 'flagship' device that costs so much!

 

[xmancool]

Hopefully, it is the battery, because if it is being drained on airplane mode it can't be anything else.

Actually, it is airplane mode itself that is draining the battery.

Hoping to extend battery life, I got into the habit of putting my phone in airplane mode when I went to sleep. Imagine my surprise when I found out that this actually shortened battery life.

Just search around in the forum, you will find people with similar experience.

I got Android 2.2.3 on Samsung S2.

 

[MrBaker22]

I'm trying to hold out until Android 2.3.4 comes out because I am hoping that it will magically solve this problem (perhaps by handling dual core hardware better?), along with the 'wifi sharing' bug which just completely drains the phone if you don't catch it in time using WatchDog or something similar - pathetic problems for a 'flagship' device that costs so much!

If you're phone is rooted then you can have access to 2.3.4 or even 2.3.5 if you wish to go that far.....

But remember rooting is at your own risk