The only other smart phones that challenged the Apple supremacy were Samsung’s phones, for multiple reasons – they were excellent, well designed, fast, well priced, and offer at par features. Everything was good for Samsung – profits were surging but then came the storm. Stories of the overheating problem emerged, videos were posted online in which phones like Galaxy S7 were catching fire, USB ports were burning and batteries were exploding.

Even though, these incidents were rare but caught attention on social media and even on mainstream media.

The result – Samsung started losing business as 2016 was the third consecutive year where the company experienced a continuous decline in revenue. One of the major issues was overheating problem in its phones.

But here is the good news. If you look beyond the Galaxy S7 overheating issue which is still rare, it is a great phone. The overheating issue is also solvable as there are more than one solutions to this problem. If you like Galaxy S7 and want to let it go just because of overheating – think again – as the problem can be resolved very easily.

Keep reading this article to learn more about the reasons behind overheating and the solutions.

Note: Even though the article is mostly about Samsung S7 series, but the solutions provided can help those who are facing overheating issues with other phones as well.

Why Smartphones including Galaxy S7 Heat Up?

First, it is natural for smartphones to get warmer as soon as you start using them. You can’t keep them cool once you turned them ON. Why? – Because of physics that tells us that heat is generated when there is movement. Smartphones also move electricity to perform different functions that result in heat generation.

But there is a difference between a warm phone and an overheated phone. Overheating can not only affect your phone’s overall performance but it can also result in permanent damage.

So what makes a slightly warm smartphone overheated?

Just like our computers have a brain called Central Processing Unit (CPU), smartphones also have Central System-on-a-Chip (SoC) that acts as a brain. Even though these units are very well optimized and rarely get overheated, but there are some solvable reasons that can result in overheating.

  • Overloaded Hardware

First, you may have overloaded the hardware. The more apps you have installed, the more processing power your phone needs that heat up SoC. People who are using multiple features on their phones like widgets, Bluetooth, WiFi, and other apps at the same time can also feel their phone heating up.

  • Heating up while Charging

Second – the most common reason of overheating in Galaxy S7 is the heating issue with charging and battery. This may be caused due to physical damage or liquid damage.

The lithium-ion batteries are the most commonly used rechargeable batteries in smartphones including Samsung Galaxy S7 and S7 Edge. Even though these batteries are one of the greatest accomplishments of modern technology, they still have few drawbacks, one of which is their sensitivity to heat.

Every time you charge a phone, the temperature may climb over 30 degrees centigrade, the limit after which the lithium-ion battery can get damaged or explode.

How to Fix Galaxy S7 Overheating Problem?

Enough with the reasons – let’s talk about the solutions now. As we said earlier, overheating is a solvable issue, all you need is apply some of the solutions and hopefully, you can enjoy your time with the phones you have.

  1. Overheating While Charging

As we described earlier, lithium-ion batteries can explode if the phone becomes too hot while charging. One of the common reasons of overheating when charging is because many of us keep using the phone while charging.

If you are using it when charging and feel your phone getting warmer, put it down and let it charge in sleep-mode.

But if your phone is still overheating when you are not using it, this could be because of fast-charging setting. Samsung’s Adaptive Fast Charging technology is used in both S7 and S7 edge, that if turned off, can reduce the heat generated by the phone when charging, but at the cost of longer charge time.

  • Go to Settings.
  • Scroll Down to find and tap on the Battery.
  • You can now turn Fast Cable Charging option OFF or ON.

Check out this YouTube video for visual display.

Tip: Turning off fast charging can also result in an extension of battery life.

Another excellent way to keep battery less warm that also results in longer battery life is to keep the charge between 30% and 80%. This means, charging battery 100% not only heat it up and causes stress, it also reduces the battery life. Similarly, waiting for the phone to get down to 0% charge also damage the battery that also results in an overheating problem when charging.

So, the best practice for all smartphones is to keep a charge of 30% to 80%. Do not let it drop below 30% as a rule and do not charge it over 80%. Even though this looks like a difficult task, but it can double the life of your phone’s battery.

How to Know if Battery is the Problem?

There is a simple trick to find out of the battery is the real culprit. Instead of using your charger to charge the phone, use your desktop or laptop’s USB port. When the charger of Galaxy S7 gives out 2 Amperes, the computer usually gives out only half an Ampere.

With this output, batteries don’t get over heated even if there is a problem. So, if your phone is still heating up when charged through a USB connected to the computer, this means your battery is not the reason for overheating. In such case, the problem could be an overloaded device, a third party app causing the trouble or hardware defect.

  1. Overheating Due to Heavy Apps

Another common reason of overheating problem is overloaded hardware or heavy apps that keep sapping the power even when the phone is not in use. This not only drains your phone faster but also keeps it hot.

To avoid this, change the Battery settings as described below.

  • Go to
  • Scroll down to tap on Battery.
  • Go to Battery Usage and tap it.
  • Tap on More.
  • Tap on Optimize Battery Usage.
  • Now tap on All Apps.

By doing this, you will stop all apps running in the background that drains power and keeps SoC busy even when the phone is not in use.

Another quick way to reduce the load on SoC that happens when your smartphone is doing a lot at the same time is by clearing the phone’s cache. The following method not only helps in keeping your phone’s temperature at an optimum level, but it also speeds up the processing time.

  • From home screen, go to Apps
  • Go to Settings.
  • Tap on Storage.
  • Locate and tap on Cached Data.
  • Tap on Clear.

This way, you can clear all cache that releases the burden on the SoC, reducing the heat while processing apps.

If you want to remove only one particular app from the cache instead of clearing entire cache, follow the below-mentioned steps.

  • From home screen, go to Apps
  • Go to Settings.
  • Tap on Applications.
  • Tap on Application Manager.
  • Now find the app you want to clear from the list and tap on it.
  • Tap on Storage.
  • Tap on Clear Cache.

Tip: You may want to use the above option for apps like Briefing and Flipboard. Both apps curate news from online sources and run even when you are not using the phone. Disabling these apps can save significant processing power and battery life. Similarly, Location Service is also one of the most power consuming apps on your phone.

To learn more about the battery life, the apps that are draining the power while running at the background and effects of disabling a particular app on battery, you can download apps like Battery Doctor.

Do not keep the Bluetooth ON for a longer period of time or use many widgets at the same time. If your WiFi is not stable and your phone keeps looking for WiFi, again and again, it will also drain the power of the phone.

How to Know if the Third Party Apps are the Problem?

A quick way to find if the third party apps are responsible for overheating is to charge the mobile in safe mode. If it doesn’t get hot when charged in safe mode, this means the battery is fine and apps can be the problem. You can start deleting apps one by one to find out the real culprit.

  1. Do Not Use Cover or Case

Even though cover and cases are recommended, but if you live in an area with a hot climate and use your phone outdoors under the sun, it is better to remove the case or cover. Samsung S7 and S7 Edge – both use the liquid cooling system to keep the phone less warm but if exposed to direct sun light or hot external temperature, the phone can quickly get over heated.

Some covers are often the root cause of the overheating problem. Try to use your phone without a case for a day or two. If the problem does not occur again, this means you need to replace the case with better one.

  1. Using the Soft Reset Option

If the phone gets overheated after an extended use, the quickest way to release the stress on CPU and battery is to use the option of Soft Reset. It closes all the running apps and frees up the memory. This method is also useful if you don’t want to lose your data.

The process is simple, just press and hold the Power button for more than 8 seconds and the device will turn off.

There is another alternative known as Hard Reset. The difference is – it deletes all the data from the memory. If you feel your phone is full of data that is causing overheating and if your data is backed up using a cloud service, using this method can significantly speed up the phone and reduces the heating.

  • Go to Apps on Home Screen.
  • Tap on Settings.
  • At the top of the screen, tap on Personal.
  • Tap on Back up and reset.
  • Tap on Factory data reset.
  • The next option will be Reset Device. The warning message will appear that informs you that tapping on the button will delete all your data. If you still want to do this, tap on it.

There is another method if your phone stops responding due to overheating issue and you can’t access Settings button on the phone.

  • Press and hold the Power button to turn off your phone completely.
  • Press and hold Volume Up. Now press and release Power. The result should be Samsung Galaxy logo on your screen. If not, repeat the process. Once done right, the screen at upper-left corner will display a message Recovery Booting.
  • Now, to move through the options on your screen – use the Volume Down and Volume Up to move up and down. Go to Wipe Data/Factory Reset and press Power to initiate the process.
  • The new options will appear on the screen. Press the Volume Down to scroll down to “Yes – Delete All User Data”. To select, press the Power
  • The process will take few minutes. Once it is over, select Reboot System Now to restart your device with factory reset state.

If your phone is getting overheated due to an app issue or burden over SoC, this process should resolve the problem. If the smartphone is still over heated, this indicates either there is an issue with the battery or hardware.

  1. Software Update

An outdated software that fails to run latest apps on your phone can also cause stress and generates heat. Make sure Samsung Galaxy S7 or any other phone in use have the latest software installed. Each latest update of software is to improve the performance of the phone.

You can experience faster and smoother operation of your phone after installing the latest version. And when the phone runs smoothly, it doesn’t generate excess heat. Here is what you can do to update to the latest software.

  • Go to Settings.
  • Tap on Software Update.
  • Tap on Check for Updates.
  • If your phone is installed with the latest update, it will not show any update but if there is an update, just tap on Update Now.

It looks like very basic but it is one of the most common reasons of slow performance of phones and overheating. Many of us often forget to update the software, so make sure you have the latest one.

Is Water Damage the Cause?

Even though Samsung Galaxy S7 and other latest Samsung phones are water resistant, but there is still a chance that water finds its way inside of your phone and causing the overheating problem.

To check if water has damaged your phone, follow the listed steps:

  • Remove the SIM card and SD card tray.
  • You can find a little white sticker inside the pot that acts as a Liquid Damage indicator.
  • It is a built-in white sticker but if it turns purple, pink or red, this means the water has damaged your phone from inside.

The Galaxy S7 overheating issue is very rare, but in most cases, the overheating is caused by physical damage or liquid damage. Even when the S7 series is water resistant, there are a lot of complaints by users where the phone is damaged by the water.

If the overheating problem appeared after the phone suffered physical trauma like a drop, or after using with water, the chances are your phone is damaged and needs a repair or replacement. Other than that, the overheating mostly occurred due to battery issue which is simple to solve if you don’t use the phone when charging or optimizing the charging setting.


The overheating issue is very rare in Samsung S7, S7 Edge, and other Samsung phones but as few incidents took place, reported on media and posted on social media, the issue became a major concern for users. But there is nothing to worry about especially if you have read the entire article. By applying the above-mentioned tips, you can get rid of the overheating problem in your phone. Avoid keeping your phone directly under the sunlight and you will be fine.

If your device persists with the problem even after applying the above-mentioned solutions, there is a good chance that the handset is defective. In such case, it is wise to get a replacement.