Apple warns; Operate iPhone 3G and iPhone 3GS within acceptable operating temperatures



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There has been various news about iPhone 3G S overheating, to the extent that the white iPhone 3G S turns pinkish in color. Apple has simply described the ideal operating temperature for the iPhone which is between 0º and 35º C (32º to 95º F). Anything lower or higher could shorten battery life. Also, the iPhone should be stored in a place where the temperature is between -20º and 45º C (-4º to 113º F). The symptoms for overheating are described as below:


  • The device 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 above)

All this is done so that the iPhone can return to an acceptable operating temperature. Emergency calls can still be made in when the Temperature warning screen shows up. iPhone 3G S or 3G might overheat due to the following activities:

  • Leaving the device 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 periods of time, such as GPS tracking in a car on a sunny day or listening to music while in direct sunlight.

So be careful before putting up an overheated iPhone in your pocket, it could burn valuable goods. It’s strange to see this warning pop up after more than a year for the iPhone 3G and not earlier. I have yet to personally find out any case of the 3G heating up, but the iPhone 3G S has become quite popular for the heat up issue, and a lot of queries from search engines to this blog confirm that. Whatever it is, be careful while using the iPhone 3G S in heated environments. Better to be safe than sorry.

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  • jenny

    Has anyone heard of an iphone 3G showing a pink dot like the water damage from extreme heat? My son’s iphone 3G shows a pink section and the store says that voids the warranty. He has not gotten it wet so just thought maybe this extreme heat we have been having in San Antonio might have done the same damage as water could do?? Any advise would be helpful.

  • Jhon Williams

    Thank you for informing the world about this Temperature warning from Apple.