Apple has admitted that its latest iPhone 3GS model can overheat but has blamed the problem on sunshine rather than a glitch with its design.
By Justin Williams
Published: 8:44AM BST 03 Jul 2009
The overheating warning displayed on the iPhone 3G and 3GS screen Technology sites and Apple forums have been indundated with comments about the new model overheating and becoming discoloured since it was launched on June 19. Some iPhone users have complained that the device has become too hot to hold to the ear during long calls while others have noticed that the white 32GB model has turned pink after overheating.
In a warning posted on one of the California computer maker's support knowledge base sites, Apple says that users should not leave their phones in a car where temperatures can exceed the -20C to 45C range that the iPhone 3G and iPhone 3GS models were designed to function in.
Apple says in the support article that "if the interior temperature of the device exceeds normal operating temperatures, you may experience the following as it attempts to regulate its temperature: the device stops charging, display dims, and/or weak cellular signal".
In its message, Apple says that the iPhone has a safety feature which warns users that the device is becoming too hot. As well as leaving the handset in a car, it says that the phone may overheat when left in direct sunlight for prolonged periods, when GPS tracking is used in a car on a hot day or when its iPod function is used in direct sunlight.
If the warning appears, Apple says that users of the iPhone should turn the device off and allow it to cool before using it.
iPhone 3GS users on Mac forums complain, however, that the handset becomes hot when it is not being used in a car. In a posting on the macrumors.com forum, one user complained that using the new device's video recording feature had caused it to overheat while another complained that after carrying his phone in a backpack, it got so hot that the plastic case became distorted with tiny bumps.