Self-overheating iPhone 13 mini
Why does my iPhone 13 mini become too hot while charging and otherwise not in use? This happens during the day and also at night in an otherwise normal room temp.
iPhone 13 mini, iOS 16
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Best reply
Some activities such as charging or a lot of computational activity, generate heat. Some warmth is to be anticipated.* Read this article about keeping your iPhone, iPad, or iPod touch within acceptable operating temperatures - If your iPhone or iPad gets too hot or too cold - Apple Support
I would also review your Battery Health in Settings. See if there are particular apps that are running all the time that are using large amounts of power.
If you think there is a problem with a device, have Apple inspect it. Go to this page to find your nearest Apple Authorized Service Provider (AASP) or Apple Authorized Distributor (AAD) --> Find Locations
How to make a Genius Bar appointment
1. Go to Genius Bar Reservation and Apple Support Options - Apple
2. Go to "Get hardware help".
3. Select your hardware and continue selecting options requiring replacing parts until you see "Bring in for Repair"
4. Sign in with your Apple ID
*"Your iPhone might get slightly warmer while it charges." - from: How to use your MagSafe Battery Pack - Apple Support