iOS is to date one of the most robust mobile operating systems, and with that comes automatic power and heat management. Even so, things do go wrong. If your iPhone is hot to the touch or if you’re unlucky enough to get a temperature warning, this article will detail some of the quickest fixes to bring your phone back to optimum operating temperature.
What are optimum operating temperatures?
iPhones are designed to run from 32° to 95° Fahrenheit, which is equivalent to 0° to 35° Celsius.
What can cause overheating?
There are three main causes of an overheating device.
- The processor is under a heavy workload. If you’re playing graphic-intensive games or editing and exporting 4K video, you’ll likely see rapid battery drain and increasing heat. This is due to the fact that there are no fans to cool down the processor, and the aluminum shell isn’t able to expel enough heat on its own. In most cases the device will simply get warm. This shouldn’t be enough to do damage or even to provoke a temperature-warning screen.
- The device is physically left in a hot condition. Keeping your iPhone in a hot car or direct sunlight is definitely something to avoid. This alone will cause excessive heat which can wreck havoc on the battery and other components. So if it’s a day at the beach, keep your iPhone under a towel or in the shade. Parking the car for a while? Keep your phone hidden under the shade and crack the windows – or take it with you. I know it seems relatively simplistic, but these two reasons alone – both due to the device being left in a warm place – are the most common culprits for an overheating device.
- The battery is failing. A failing battery can expel a lot of heat. If you believe this to be the case, immediately power down the device and have it serviced by Apple. Very rarely should this be an issue, as iOS has steps to follow in case of a battery malfunction – mainly, iOS prompting the device to shut down without user input. You can run a battery diagnostic to check for signs of a battery failure, how to avoid it, and steps for having your iPhone serviced.
Most definitely do not place your device into a refrigerator or freezer in hopes of speeding up the cooling process. While this is a method of solving the issue, it would do more damage than it would be fixing. Due to the rapid increase and decrease in temperature, overall battery charge capacity would be lowered due to damage.
However, a few things you can try instead include:
- Removing the case
- Closing all running applications and disabling background app refresh
- Entering low power mode (This will turn off multiple features, but you can turn them off individually if you’re reliant on them.)
- Dimming the display
- Turning off location services
- Turning off Bluetooth
- Keeping the device out of a warm environment
- Running battery diagnostics
- Servicing your device
If the issue continues to arise after attempting the tips above, and through diagnostics it is decided the battery isn’t to blame, you may want to look into restoring your device and restoring from backup. Do remember that getting the device looked into and serviced by Apple is always an appropriate option, as they’ll be able to take further diagnostic steps and secure a replacement device under warranty, if needed.