BATTERY DRAIN ISSUES AFTER IOS 13.1.2 UPDATE,- SOLVED
ALL OWNERS OF IPHONES 5/6/7/8 WHO ARE UNHAPPY WITH EXCESSIVE BATTERY DRAIN SHOULD READ
The issue is NOT Apple’s fault but App developers. The problem is caused by your iPhone failing to update certain apps (even if you have set it to do this automatically via SETTINGS).
It’s as though you have put your car in the garage overnight with the heater running but not noticed it as you shut the door. When you return in the morning the battery is nearly dead. Certain Apps are triggered to continue running and using power even when you have exited them by the new iOS update.
The solution is to force App updates by going into the Apple AppStore and clicking on the update icon (if there is one). You should find that suddenly there are a few apps updating and that should solve your problem. I suspect that Instagram App is the culprit but have no proof.
