Sounds like there has been a few hassles with the update. I did too have a battery life problem until i did a "restore" through iTunes. It solved everything and battery life is back to multiple days again.
We are giving away 'Black Panther' swag!
Four lucky readers will be taking home *Marvel*ous "Black Panther" prizes, including magazines autographed by the King of Wakanda himself! Giveaway ends Feb. 25, 2018.