With temperatures set to soar across Britain to highs of 35C this week, everyone is in a rush to stay cool.

But as we battle with sweaty bedrooms and scorching sunlight, it's easy to forget the impact of extreme temperatures on our gadgets.

The Apple iPhone is at particular risk during very cold or very hot temperatures, with its performance being directly affected by the weather.

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You may already have noticed that your iPhone slows down when it's very cold, but temperatures higher than 35 C can cause it to overheat and permanently damage everything from the battery life to the phone's processor. That could make this week's predicted heatwave deadly for your device.

Apple says that if the temperature of your iPhone runs too hot, it could lead to:

  • slower charging
  • a broken display
  • poor mobile signal
  • malfunctioning camera
  • performance issues
  • long-term battery problems

You may even see a temperature warning screen that says 'iPhone needs to cool down before you can use it'.

How to stop iPhone overheating

Luckily, there are a few steps you can take to stop your iPhone overheating.

If you haven't already, try removing the phone from its case. Silicon cases offer great protection for your device, but they can insulate and trap heat, forcing it to run hotter.

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You should also consider reducing your screen's brightness as this could contribute to higher temperatures.

Keeping your device concealed in a bag when you're in a hot car or outdoors could also prevent it getting too hot in direct sunlight.

If your device does overheat and you get a hot temperature warning, putting it in a dark place such as a cupboard could help it cool off. It's probably not a good idea to put it in the fridge or freezer as the condensation could damage the iPhone even more.


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  • Apple
  • iPhone
  • Heatwave

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