Are You Facing Battery Life Issues on Your iPhone after Updating to iOS 13.3 .1?
Does iOS 13.3.1 Cause iPhone Battery Drain Issues? Watch the Video to Find Out
Massive battery drain with iOS 13.3.1, iPhone 7+ : r/ios
IOS 13.3 Draining Battery Life - Apple Community
How to Fix Bad iOS 13 Beta Battery Life
Anyone else having battery drain issues? I have an iPhone 7 Plus running iOS 13.3.1 and I've randomly lost 20% battery in 5 mins. New OEM battery too. : r/ios