Left iPhone 7 standby overnight and go settings check the battery usage time is 2 hours. I'm not sure what cause my iPhone 7 running in the background.
Added (1). Charged my iPhone 7 to 100% and let it on Airplane mode, low power mode on & wifi off standby overnight without touch it.
But when I wake up and go settings check the battery usage time is 2 hours. I'm not sure what cause my iPhone 7 running in the background.
I have tried learn from internet and reset my phone, but the problems still exist.
May I know anyway to solve it?
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