HTC One S T-Mobile with Power Saver problem

[Hoang Manh]

Hi everyone,

I updated my phone from 4.0.2 to Jelly Bean 4.1.1 last week, and there is a new feature "Powersaver". And my phone became a battery killer with this feature :'(.

Before update, from 12P.M to 7A.M, my phone drained about 5%, and after updated, it drained about 20% with power saver turn on (Turn off 3G data and Wifi). And I realize that my phone battery will be drained faster with Powersaver turn on. But I can not turn it off completely, it automatically turn on at night...

Anyone has idea for this problem?

Thanks alot and sorry for my poor English.

 

[Hoang Manh]

Today I'm using app batterystats to check my battery, and I see the process Mediaserver keep the phone awake all the time. I can not turn it off, and this process drain the battery so much.
I have searched and see many people have this issue. Anyone has solution for this bug?