What does red lines in the battery usage levels indicate when charging iPhone 16 Pro?
I set the maximum battery charge percentage for my iPhone 16 Pro to 85% and yesterday it reached less than 50% at 1 AM. I connected the charger and turned off the phone completely. The charger is a RAVPower 60W iSmart charging system. I used a USB 2 to Type C cable. When I woke up at 2 AM, I found the phone on and the charge was 85% complete, but I found these red lines within the usage levels, which are the charging period and turning off without use. Is there an explanation for this?
[Re-Titled by Moderator]
iPhone 16 Pro, iOS 18