Apple has a support document called “Keeping iPhone 3G and iPhone 3GS within acceptable operating temperatures” to which the company has directed those with concerns about alleged overheating problems with 3G and 3GS models of the device.
In addition to offering practical advice such as “Don’t leave the device in your car” (as car interiors can exceed the recommended operating range of -20º to 45º C [-4º to 113º F]), the document also warns that CPU-intensive applications, such playing music or using the GPS while in direct sunlight may also overheat the iPhone.
The OS has a temperature warning screen built in, that appears to indicate when the phone could be running into problems and may not work properly.
Using the iPhone in temperatures over 95 degrees can trigger the temperature warning, according to at least one report. “Low- or high-temperature conditions might temporarily shorten battery life or cause the device to temporarily stop working properly,” Apple warns in the support document, though it says when the temperature warning appears, the phone “may still be able to make emergency calls.”
Recent anecdotal reports of 3GS iPhones overheating, with some white models turning pink as a result, have led to speculation that Apple may have a recall situation on its hands, but the company so far is relying on the fact that “iPhone 3G and iPhone 3GS comply with the safety standard for Safety of Information Technology Equipment, IEC 60950-1,” and has had no further comment on the overheating issue.
[GearLog]
