A screenshot is circulating online that shows an iPhone temperature warning if your device overheats.
According to Apple's Knowledge Base it is a real screen even though few have ever seen it.
Operate iPhone 3G in a place where the temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might temporarily shorten battery life
or cause iPhone 3G to temporarily stop working properly.
Store iPhone 3G in a place where the temperature is between -20º and 45º C (-4º to 113º F). Don’t leave iPhone 3G in your car, because temperatures in parked cars can
exceed this range.
If the interior temperature of iPhone 3G exceeds normal operating temperatures, you may experience the following as it attempts to regulate its temperature:
- iPhone 3G stops charging
- Display dims
- Weak cellular signal
- Temperature warning screen appears with the message "iPhone needs to cool down before you can use it" (see image below)
This message appears when the operating temperature has become too hot. This is a safety mechanism that protects the components of your iPhone 3G. If this
message appears, you should turn iPhone 3G off, move it to a cooler environment, and allow it to cool before resuming use.
Note: When this message appears, iPhone 3G may still be able to make emergency calls.
Some conditions and activities that may activate the Temperature warning message:
- Leaving iPhone 3G in a car on a hot day.
- Leaving it in direct sunlight for extended amounts of time.
- Using certain applications in hot conditions or direct sunlight for long perio
ds of time, such as GPS tracking in a car on a sunny day or listening to music while in direct sunlight.
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