After the new iOS 15 update, my iPhone 7’s battery was draining very fast and not holding charge at all. After doing some research we have found a way to fix it. Check out this video to fix iPhone7/7 Plus battery draining fast problem easily.
0:00 Problems people face
0:29 check suspicious apps and Delete Them
1:11 Offload and Reinstall apps
2:00 Turn Off Background App Refresh
2:24 Turn on Low Power Mode
3:00 Check Battery Health
