Hey guys...
if you ask me it has to be a probem with the ios. I have tried all the fixes postet in this forum, but nothing really worked for me.I restored my iphone more than once and set up as a new one. I didn´t install apps, no E-Mail acoount, no 3g (all day on Wifi), no bluetooth, no location service, no push, no cloud, reduced brighness and absolutely no use!!! And the battery still drains. By having a look in Settings--General-- Usage, i noticed that the time of usage and standby are nearly identic. By only lying on the table, the Phone droppes 3-4% per hour. This is horrible! Something is running in the backgrouns, draining my device.
I really love my iPhone, but if there won´t be a fix or solution for my 4s, I am going to sell it. This is no accaptable performance for a product with this price!
PS:
I even tried to restore on certain ways:
1. usual iTunes restoring ( plug iphone and chose restore)
2. downloading the ipsw for iOS 6.1.3 an directly chose this file in iTunes for restoring
3. created a Guest account on windows, installed itunes an restored with the newest itunes version
Everything with the same annoying results.... All restores were done wired with itunes
So far... it is no third party app draining my battery --> it must be a process getting stuck in the updating process or a problem with the iOS. I have no further ideas...