Low- or high-temperature conditions might cause the iOS device to change its behavior to regulate its temperature. Using an iOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause the device to turn off. Battery life will return to normal when you bring the device back to higher ambient temperatures. Using an iOS device in very hot conditions can permanently shorten battery life. Keep reading to learn about the operating temperatures and temperature management of iPhone, iPad, and iPod touch.
Part one: Under what conditions will my device get warm?
- When you set up your device the first time
- When you restore from a backup
- When apps reindex or reanalyze data, like Photos tagging for faces, places, or keywords after a software update
- When you use graphics-intensive or augmented-reality apps or features
- Leaving the device in a car on a hot day.
- Leaving the device in direct sunlight for an extended period of time.
- Using certain features in hot conditions or direct sunlight for an extended period of time, such as GPS tracking or navigation in a car, playing a graphics-intensive game, or using augmented-reality apps.
Part two: What if your device gets too warm?
If the interior temperature of the device exceeds the normal operating range, the device will protect its internal components by attempting to regulate its temperature. If this happens, you might notice these changes:
- Charging, including wireless charging, slows or stops.
- The display dims or goes black.
- Cellular radios enter a low-power state. The signal might weaken during this time.
- The camera flash is temporarily disabled.
- Performance slows with graphics-intensive or augmented-reality apps or features.
- The device might show this alert: “iPhone needs to cool down.”
Here’re some instructions you can take:
- To resume use of your device as quickly as possible, turn it off, move it to a cooler environment, and allow it to cool down.
- Update to the latest software.
- Don’t leave the device in your car, because temperatures in parked cars can exceed this range.
- Remove certain cases during charging.
- Enable Low Power Mode to extend battery life.
- Turn on Airplane mode when you are in a poor cell coverage area.
- Turn off Location Services for some app.