Battery drain after ios 13.4 for iPhone 7
Mine is iPhone 7.
A huge battery drain during night from 89% to 57% .
Drain is unusual.
And also my battery health decreased by 1%.
iPhone 7, iOS 13
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After a major update like 13.4, there’s a lot of activity taking place in the background and especially at night and in the Photos app. It should settle down after a few days.
Normally, it’s preferable to leave the phone charging overnight. This won’t damage the battery.