Since this update, my phone has not backed up to icloud automatically, when locked,charging and on wifi. I've never had this issue prior to this update. It keeps telling me apps that I don't even use anymore and have since deleted that they weren't backed up. I've tried everything that websites said to do when this happens from signing out of icloud, to resetting the settings and still the same thing. I end up having to manually back every day to keep back ups up to date.
My next step is to a complete reset, and if that doesn't work hope this gets fixed in the next software update, otherwise I'll be making a trip to the apple store.