iPhone 4 won't hold charge after iOS 7 update
Hello,
I'm hoping I can get some help with this issue. I updated my iPhone 4 to the new iOS 7 software and now it will not hold a charge. The update was completed just fine last night. I left the phone on the charger all night, but when I awoke this morning I noticed the battery percentage was showing 20%. I was confused and checked the charger; unplugged it and plugged it back in. The phone recognizes that a charger is in the port (audio feedback as well as visual), but the percentage slowly decreases. I also tried using two other chargers to see if it was in fact my charger that was at fault. Same results. Inevitably, the phone reached 0% and shut down. I never had this issue before upgrading to iOS 7. I had iOS 6.1.3 before upgrading and I routinely charged my iPhone 4 daily without any issues. I've tried everything I know to do; any help would be much appreciated.
Thank you.
iPhone 4, iOS 7