A lot of noise has been made recently about the new Apple iPhone 3GS having heat issues. While there hasn't been any statement from Apple about the problem, the company did update its tech support webpage with information on keeping the iPhone 3G and 3GS within acceptable operating temperatures.
Apple recommends that users operate iPhone 3G and 3GS in temperatures between 0º and 35º C (32º to 95º F) and to store in between -20º and 45º C (-4º to 113º F). Operation outside of those ranges could result in the device to stop charging, the display to dim, weakening of cell signal, or for the phone to stop working altogether until the temperature returns to within normal ranges.
Apple advised against leaving the device in a car on a hot day or under direct sunlight for long periods of time.
The original aluminum-backed 2G iPhone does not appear to be affected by the same guidelines and ranges as the 3G and 3GS – likely because the chips in the newer phones run hotter.
Some have interpreted Apple's updating of technical support documents regarding temperature as an admission of a fault with the iPhone 3GS, but in reality the company's updated guidelines are commonplace (and common sense) for many electronic devices.
Have you ever had any problems with an iPhone 3G or 3GS even when adhering to Apple's conditions? Let us know!