[iMore Question]

the new iphone up date dranes my battery and gives pop ups when its off I want the old update back !!!!! how do I delete 10.0 iphone update? !!!

[nikkisharif]

Go into settings & check to see what apps are draining your battery then check background app refresh. Sometimes when the update occurs, these settings are adjusted and affect the battery.

If you still want to revert, you'll need to make sure you have a backup in iTunes from iOS 9, put your phone in recovery mode, connect to iTunes and restore to that old OS. If you don't have an d backup, this will not work.