Iphone 13 pro max discharging/ showing wrong battery percentage
Hi,
i’ve had my iPhone 13 pro max since launch day and battery life has been amazing. Lately i’ve been noticing that every time i fully charge my phone to 100% and leave it plugged in for a while that it discharges a lot. I use the fast charging brick so its not a weak charger/ cable. Tried a hard reset which made the battery jump from 92 to 100% but its weird to me that this is happening. Anyone else with this problem or is it an ios 15.1 bug?
iPhone 13 Pro Max, iOS 15