I used my iphone from 08:00 and it is now 20:37. Was using it the whole day and only use 23% Battery still have 77% left.
Check for apps that run in the background. It can drain your battery very fast.
Update iTunes and all other updates that was available, but now `i get an error message:
There was a problem downloading the software for the iPhone "XXXXX's iPhones". You do not have permission to access the requested resource. :twisted: