Fri Feb 03, 2017 11:06 am
New updates always get blamed for battery usage especially in the forums. I would make sure all photos etc are moved to your main computer, then return the phone to factory settings and rather than an automatic recovery, manually re-install all your favourite apps from the app store and email accounts and start again.
I am an Android user but occasionally I turn off Google's automatic backup and restore, then reset to factory and manually repopulate. It's surprising how many apps you don't really need again.