Cool your phone when it gets hot or hot

How to prevent Android and iPhone smartphones from overheating and how to cool your cell phone when your phone gets too hot

Overheated phone summer In some extreme situations, a modern smartphone overheats, to the point of becoming very hot (you cannot touch the back or the screen). This can happen for different reasons: because some app is using the processor massively or because we are victims of some internal malfunction.

Leaving your phone in the sun on a particularly hot day should also not be underestimated: even an exposure of just 4 minutes is enough to transform your phone into a piece of hot metal or plastic!

Although it is natural for the phone to heat up during its use (when we use heavy games or apps), we can however prevent the phone from becoming hot, to the point of burning, causing a blockage or damage to the internal components.

READ ALSO -> How to measure phone temperature on Android and iPhone

1) Does the smartphone overheat?

First of all, you have to understand where the heat in your cell phone comes fromi.e. which part in particular is overheated: in most cases it is the rear part that overheatswhere the battery and processor are located.

In this case it is therefore not the whole phone that is hot but only the part that houses the battery and/or the CPU: they probably have some problem, we have just finished using fast charging (or super fast charging) or we have finished play a particularly heavy game. If, however, the hot part is the lower one, then there may be a problem with the battery charger, which perhaps is not compatible or is damaged.

During phone calls, the speaker can become very hot which heats up the ear (causing discomfort), irritation and even the worry of getting burned.

2) Causes of overheating

The most probable causes of an Android mobile phone (Samsung, Huawei or others) and iPhone overheating are:

  • 3D game or always-on app: in cell phones there are no fans inside to cool the processor and the aluminum or plastic shell is not able to expel all the heat generated.
  • Exposure to direct sun: typical mistake when you forget your phone in the car, especially in summer. In this case, excessive heat can also damage your smartphone or cause it to turn off suddenly.
  • Damaged battery: A damaged battery can release a lot of heat, and to avoid explosions, the phone will shut down and you won’t be able to turn it on.
  • Fast charging: Fast charging and ultra-fast charging generate a lot of heat, especially in the height of summer.
  • Ricarica wireless: the use of electromagnetic waves for charging will inevitably lead to overheating, especially if the charging current exceeds 10 W.
  • Particularly long call: also in this case making a voice call under the sun or near a radiator is certainly not the best for the health of your phone and skin.
  • Very narrow covers: they prevent the phone body from cooling.
  • Virus: Virus apps are characterized by constant use of the CPU even when the screen is off, causing overheating.
  • Film in streaming: Watching movies in streaming leads to the phone overheating.

From these causes we can derive many scenarios that lead to overheating. For example, continuous and prolonged use of the camera at the highest resolution settings on a hot day or in the sun can cause excessive heat and even display a high temperature warning.

Another frequent case is that of an installed virus app that remains in the background and uses the internet data network to continuously exchange data with the outside, causing constant heat. Furthermore, it may be that you are using the wrong case, which retains heat and prevents cooling by keeping the mobile phone closed too much.

3) How to prevent it from getting too hot

In general, to avoid overheating on any phone (both Android and iPhone), the recommendations are as follows:

  • We always charge the smartphone with the supplied charger and USB cable, without leaving it charging too long after it has reached 100% (we unplug it within an hour of finishing charging). In this regard, you can read the guide above How often to charge your cell phone/laptop battery to extend its life.
  • We do not leave the phone in the sun, in the car or in places where the temperature can exceed 40 degrees (very close to the limit point of the phone, which can suddenly turn off to avoid explosions or fires).
  • Use a cover or case that doesn’t retain too much heat, so it’s not cheap.
  • When we use heavy apps (such as games) or watch streaming videos, it is best to stop and let the mobile phone cool when it is overheating (approximately every hour of watching or playing).
  • Check your camera settings and lower the video and image recording quality.
  • Check active apps and especially apps that drain your battery, also checking how much CPU and network traffic they generate. In this regard we can read the article on how to manage active apps in Android.
  • Check if the battery works well, as seen in the how to guides check battery health on iPhone and how to use app for testing and verifying hardware on Android smartphones.
  • Use slow refills at night: during the night it is best to use only “slow” charging, leaving fast or ultra-fast charging only when we are really in a hurry.
  • Use slow wireless charging: if you use wireless charging, make sure that it does not exceed 10 W of charging current, so as to avoid most overheating.

By doing this the phone will never get too hot, unless we leave it in the sun or we are paying by suffering this heat due to a virus infection.

4) Cool down the phone that is too hot

In cases where the phone feels too hot we can intervene immediately to cool it by applying the following advice:

  • Let’s turn off the phone.
  • We remove the case and the cover; let’s leave the phone turned off for at least 10 minutes.
  • If it continues to heat up when you reboot (even in the shade), close all applications and disable app updates and background sync.
  • We turn on the energy saving mode and reduce the brightness to minimum.
  • We deactivate location services and GPS.
  • Turn off networking and Bluetooth

Only by following these tips can we reduce the risk of overheating and save the internal components of the phone.

5) App to monitor phone temperatures

For Android smartphones, some applications can be found in the Google Play store which promise to always keep the phone’s temperature under control and avoid overheating.

  • CPU Monitor, which controls the CPU temperature. As a tool it can be convenient because it shows us which applications use the CPU the most and it is nothing more than a task manager app for Android
  • Monitor CPU, RAM, Widget it is a very good app that also offers a widget to always keep an eye on the temperature of your phone.

For further information we can also read our guide on the app Ampere, excellent for controlling the charging cycle and consequently the battery temperature.


A hot or medium-hot phone is never a good feeling but this heat is necessary during operation in certain environments or in certain situations, given that the CPUs and batteries present on modern phones they have very little space to effectively dissipate heat.

Problems arise when the phone becomes so hot that it cannot be picked up, often going into safety lock: in these cases we advise you to immediately follow the advice above to avoid explosions, damage or fires caused by hardware damage.

On the same topic we can read our guides on explosion or fire risks of a modern telephone o how to fix if your android phone keeps restarting when it’s hot.

Leave a Reply

Your email address will not be published. Required fields are marked *