How to fix Samsung Galaxy S7 Edge that keeps restarting after an update [Troubleshooting Guide]

Random #reboots and frequent restarts may be caused by faulty hardware such as the #battery or it can be because of corrupt caches and/or data. Another possibility is that an app or two keeps crashing and creates conflicts in the firmware that will result to freezing and then the restart.

Since we started supporting the #Samsung Galaxy S7 Edge (#S7Edge), we’ve already seen a lot of problems like this and more often, they occur after a firmware update regardless whether it’s a major update or just a security patch. My point is, there’s a greater chance that this problem is firmware-related especially if it started out of the blue without apparent reason.

Read on to understand more about the problem and learn how to fix it. I will be providing step-by-step instructions on how to troubleshoot your device when this thing occurs. While we always strive to fix the problems sent by our readers, we don’t resort to very technical procedures or those that require advance knowledge in flashing firmware or opening up a phone because majority of our readers aren’t as techie as others. Thus, our procedures are safe to follow, however, things can still happen even if you’re careful so please proceed at your own risk.

For those who have other issues, make sure  you drop by our S7 Edge troubleshooting page where we post all the links to articles we publish each week. Try to find issues that are similar to yours and use our suggested solutions and/or troubleshooting guides. If you need further assistance, then you may contact us by filling up our Android issues questionnaire.

Troubleshooting Galaxy S7 Edge that keeps restarting

In this troubleshooting guide, we will try to rule out one possibility after another to be able to determine the cause and find a solution to the problem.

Step 1: What happens if the phone detects stable power source?

A faulty battery may cause this problem because the power source is unstable and therefore results to random reboots. So, for the first step, try to plug in the charger to the wall outlet and then connect the cable to your phone. The problem we received was about the device that keeps restarting so I assume the device can charge without any issue, otherwise, you need to read this post: How to troubleshoot Samsung Galaxy S7 Edge that’s not charging & other power-related issues.

You may also read this: How to fix Samsung Galaxy S7 Edge charging problems [Troubleshooting Guide]

On the other hand, if the phone charges fine, then observe the device to know if it reboots on its own while being charged because if not, we might be looking at a possible battery issue. But even if that’s the case, we suggest you continue with the troubleshooting.

But what if the phone still reboots while being charged?

In this case, we are still trying to isolate the problem because it could still be a hardware or a firmware issue. The next step may help.

Step 2: Restart the phone into diagnostic state and observe further

The next thing we need to rule out is the possibility that one or two of your downloaded apps is crashing, which may result to firmware crash as well and cause random reboots depending on the severity of the case. Some app crashes may just freeze the phone for a few seconds but there are really those that cause so much trouble. You need to isolate whether it’s a third-party app that’s causing it or a pre-installed one by booting the device in safe mode:

1. Press and hold the Power key.
2. As soon as you can see the ‘Samsung Galaxy S7 EDGE’ on the screen, release the Power key and immediately hold the Volume Down key.
3. Continue holding the Volume Down button until the device finishes rebooting.
4. You may release it when you can see ‘Safe mode’ in the bottom left corner of the screen.

Once you’ve booted successfully in safe mode, observe closely to know if the phone still reboots or not anymore.

If the phone still reboots, then your third-party apps have nothing to do with it. It’s an indication that we might be dealing with a firmware issue. Otherwise, you just have to find those apps and uninstall them.

Step 3: Try deleting the system cache or wipe the cache partition

This method is a general troubleshooting procedure for the firmware. We know at this point that the third-party apps have nothing to do with the reboot issue. Since pre-installed apps are embedded in the firmware, it’s better that we troubleshoot the firmware directly that go after individual apps. Besides, we don’t know which app is the culprit so it would really take much time finding them.

Wiping the cache partition will delete the system cache that may have been corrupted for some reason. After the process, the phone will create new caches that will work perfectly with the firmware. So, try to follow these steps and see if the method helps:

1. Turn off the phone.
2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
3. When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
6. Once highlighted, you may press the Power key to select it.
7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
8. Wait until your phone is finished wiping the cache partition. Once completed, highlight ‘Reboot system now’ and press the Power key.
9. The phone will now reboot longer than usual.

Once the device is up and ready, continue your observation and if it still reboots after all the procedures you’ve done, the next step should be the last.

Step 4: Bring the phone back to its default settings through Master Reset

As far as troubleshooting is concerned, this is your last resort. It comes last because it requires you to make a backup of your important files and data especially ones that are saved in your phone’s internal storage. The backup process is usually a hassle but you need to do it. Once you’re finished, follow these steps:

1. Turn off your Samsung Galaxy S7 Edge.
2. Press and then hold the Home and Volume UP keys, then press and hold the Power key. NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.
3. When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds. NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
6. Once highlighted, you may press the Power key to select it.
7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
9. The phone will now reboot longer than usual.

If the problem still persists after this, then it’s time you sent it for checkup or repair as it might be a hardware issue. You’ve done all you need to do to rule out the possibility that the problem is caused by a firmware issue.

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