iPhone 4s Battery Drain issue

[HarisGodil]

lately the battery life of my phone has reduced considerably

i fully charge it at night and when i wake up its reduced by 20-25%. and when i check usage and standby times its almost same or there is a bit of variance.

also when i switch it off, it switches itself on..i tried searching for the solution but can not find it. i wonder if anyone of u know.

i am guessing there is a process running in the background but i duno how to stop it or even how to check what processes are running on my phone.

 

[Piloten]

I'm going to jump on your bandwagon here and say I have the same issue with terrible battery life on my 4S as well. I have even disabled Siri and nearly every other service on the phone (i.e. many of the location services) to save battery life, as well as 50% brightness and no wifi or bluetooth.

Looking for answers as well!