Move the iPhone out of sun or a parked car, disconnect charging, stop navigation or intensive apps, and let it cool naturally before using it again.
Warmth during setup, restore, wireless charging, navigation, gaming, or camera use can be normal. A temperature warning, charging pause, dim display, or disabled flash means the protection system is limiting the phone and the heat-producing activity should stop.
Use the published temperature limits
Apple designs iPhone and iPad for use where the ambient temperature is 32° to 95°F (0° to 35°C) and storage from -4° to 113°F (-20° to 45°C). A parked vehicle can exceed that range. Prolonged use in very hot conditions can permanently shorten battery life.
Cool the phone without causing condensation
Move it into shade or an air-conditioned indoor space, disconnect wired or wireless charging, stop games, camera, restore, and navigation, and remove a heat-trapping case if it can be removed safely. Turn the device off if the warning permits. Let it cool naturally.
Do not place the phone in a refrigerator or freezer and do not press an ice pack directly against it. Rapid cooling can introduce condensation. Do not work around a disabled flash or charging pause; those are protective limits.
Decide whether the heat is expected
If the phone cools after setup or a demanding task ends and no warning appears, monitor it. If it becomes hot during light use or while idle, check Battery settings for a continuing update, weak signal, or an app with sustained background activity. Repeated restarts, rapid battery loss, swelling, odor, smoke, or painful heat require service rather than another charger test.
Resume carefully
Wait until the warning disappears and the case and phone feel close to room temperature. Restart charging and verify that a temperature-related charging-hold message clears. If it returns in a normal room with an Apple-compliant charger, record the charger, app, ambient conditions, and exact warning for Apple Support.
Primary sources
Interfaces and policies change. We recheck the steps above against these sources and show the verification date at the top of the guide.