My iPhone 7 battery draining rapidly
My iPhone 7 was working perfectly fine until i updated to iOS 11.4 and ever since i did that my battery is draining rapidly even without me using it at all . I used to go a full day without charging it now it may last half a day. I am just wondering if something got turned on with this new update that I have to turn off to save battery life .i have not done anything more than update the iOS . What will do for battery draining?