Phone Overheating? Why It Happens + 7 Ways to Cool It Down
2 min read · 7 steps · Updated 2 October 2026
Is your phone getting hot? Here's why phones overheat (heavy apps, charging, weak signal, heat) and 7 simple fixes for iPhone and Android: get it out of the sun, take off the case, close heavy apps, don't use it while charging, use a good charger, turn on low power mode, and update and restart.
Your phone feels hot in your hand, the screen dims, or you see a temperature warning. That's annoying, and over time heat can wear out your battery. Here's why phones overheat, and seven simple ways to cool them down.
First, why does it happen? Heavy apps like games, video calls and navigation, charging, a weak signal, and hot weather all make your phone work harder and get warmer.
Step by step
Get it out of the sun
Never leave your phone in direct sunlight or on a car dashboard. Move it somewhere shady and cool. But don't put it in the fridge or freezer, because sudden cold can cause moisture inside.
Take off the case
A thick case traps heat like a jacket. If your phone feels hot, take the case off for a while and let it breathe.
Close heavy apps
Games, video calls, the camera and navigation use a lot of power. Close the apps you aren't using, and check your battery settings to see which apps use the most.
Don't use it while charging
Charging already makes heat. Gaming or streaming at the same time makes it much worse. Let it charge in peace, and don't charge it under your pillow or on your bed.
Use a good charger
Cheap, uncertified chargers and damaged cables can overheat. Use the original charger or a certified one from a trusted brand.
Turn on low power mode
Low power mode, or battery saver on Android, reduces background activity and brightness. Lowering your screen brightness helps too.
Update and restart
A buggy app or old software can keep your phone busy in the background. Update your apps and your system, then restart your phone.
Good to know
And if your phone gets hot even when you're not using it, or the battery looks swollen, stop using it and take it to a repair shop. A swollen battery can be dangerous.
In short: Get it out of the sun, take off the case, close heavy apps, don't use it while charging, use a good charger, turn on low power mode, and update and restart.