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How to fix your Samsung Galaxy S7 that started to randomly reboot after the Android 7 Nougat update [Troubleshooting Guide]

When a high-end #smartphone like the #Samsung Galaxy S7 (#GalaxyS7) starts to randomly reboot, it’s a sign that the phone maybe suffering from a firmware related issue especially when the firmware has recently been updated.

Samsung recently rolled out the Android 7.1 Nougat update for its flagship devices but halted it due to some issues. Some owners, however, turned to us for help and among the most common complaints we received is the random reboot problem that started after the update.

Read on to understand more about this issue as well as how to troubleshoot your phone when it occurs. It’s better that you know how to deal with this problem so you’ll be ready when you’ll encounter this. Or, for those who are currently experiencing this problem, you’ll know what to do to bring your phone back to life.

But before anything else, if you are looking for a solution to a different issue, then try to visit our troubleshooting page for we have already addressed hundreds of problems reported by our readers. Find issues that are similar with yours and use the solutions or troubleshooting guides we suggested. If they don’t work for you or if you need more help, fill up our Android issues questionnaire to contact us.

How to troubleshoot Galaxy S7 that randomly reboots

The purpose of this troubleshooting procedure is for us to learn more about this problem, why it occurs and what its causes are. While this problem may have started after an update, we still have to roll out some possibilities to pinpoint what the real cause is. The following are the steps you can follow to try to fix this problem…

Step 1: Restart your device in Safe mode to immediately isolate the problem

Rebooting your phone in safe mode will tell you immediately if the problem is caused by some third-party apps or if it’s an issue with the firmware. You don’t have to do anything, just boot your phone in safe mode and observe your phone to know if it still reboots while in that state.

  1. Press and hold the Power key.
  2. When Samsung Galaxy S7 logo appears, release the Power key and immediately hold the volume down key.
  3. Continue holding the Volume Down key until it finishes its rebooting.
  4. When “Safe mode” appears on the screen immediately release the Volume Down key.

If the phone doesn’t reboot in safe mode, then it must have been caused by one or some of your third-party apps. You need to find those apps and uninstall them one by one. You may have to reboot your device in normal mode and continue your observation until you can pinpoint which app is causing the problem. However, if the problem still occurs even in safe mode, then move on to the next step.

Step 2: Clear the cache and data of apps that potentially cause the problem

In this step, you’ll learn how to reset individual apps, assuming the problem is caused by third-party apps. Apps accumulate data over time and the system creates their individual caches so they would run smoothly. You need to clear those caches and data that are stored in your phone’s internal storage to reset the apps and here’s how you do it…

  1. From Home screen, tap App icon.
  2. Tap Settings.
  3. Tap Applications and Application manager.
  4. Swipe to ALL tab.
  5. Find and tap suspected app.
  6. Touch the Force Close button first.
  7. Tap storage.
  8. Tap Clear cache and Clear data, Delete.

I know it’s easier said than done so if you think you’ll spend more time finding the apps that are causing the problem, it’s better that you just backup your data and files and then reset your phone but it’s your call…

  1. From the Home screen, tap the Apps icon.
  2. Find and tap Settings and then touch Backup and reset.
  3. Tap Factory data reset and touch Reset device.
  4. If you have screen lock feature turned on, enter your password or PIN.
  5. Touch Continue.
  6. Tap Delete all to confirm your action.

Assuming that the problem still occurs in safe mode, then you don’t have to go through this step so move on to the next.

Step 3: Delete the system cache so they’ll be replaced with new ones

After the first two steps and the problem still persists, then it’s time to troubleshoot the firmware. The system cache must be the first one you should go after as it can easily be corrupted during firmware updates. The thing is that system caches may affect the performance of your device when corrupted but when you delete them, the system will create new caches that are completely compatible with the new firmware. Follow these steps and see if the problem gets fixed…

  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 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.

Step 4: After wiping the cache partition and the issue remained, Master Reset your phone

While wiping the cache partition is effective in fixing firmware-related issues, there’s no guarantee. So if the problem persists, it’s time you reset your device. However, make sure you backup all your files and data first as they will be deleted during the process. After the reset, don’t install any files yet but observe your phone to see if the it still reboots.

  1. Turn off your Samsung Galaxy S7.
  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 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 remained after this, it’s time you had the device checked by a technician.

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