iPhone 12 mini battery

88% is in the right range for 312 cycles. But you must be a very heavy user to have gone from 0% to 100% 312 times in only 180 days. That would mean that you fully discharged the battery and recharged it about twice a day. Was the phone new when you bought it? How did you determine the number of cycles? That isn’t something that the phone reports natively.

Well, as I said, 88% is about where it should be for 312 full charge cycles. 312/500x20% - 12.48%, and 100%-12% = 88%

Plug in the phone while playing the game so the outside power source is powering the phone rather than the battery.

Hi ashish1564,

We understand that you have questions about the battery health of your iPhone 12 Mini. A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. Since battery health is based on the individual usage of the user, it's tough speculate on what's considered normal. We recommend reviewing this article for guidance on maximizing the battery life on your device: Batteries - Maximizing Performance - Apple

Take care.