iPhone 12 Pro screen unresponsive and reboots after sleep
Usually after being asleep, iPhone 12 Pro screen becomes unresponsive and the phone reboots itself
iPhone 12 Pro
That sounds like a hardware problem, and a dying battery is a likely cause. Go to Settings/Battery/Battery Health and see what it says, and not the Maximum Capacity, which should be above 80%. If it is lower you need a new battery.