How To Fix Samsung Galaxy S9+ Reboots On Its Own

The #Samsung #Galaxy #S9+ is one of the premium Android smartphone models available in the market that has a large display. This phone uses a large 6.2 inch Super AMOLED display which makes it an ideal device to use for viewing various multimedia content. It’s also one of the most powerful mobile devices as it uses the Snapdragon 845 processor paired with 6GB of RAM. Although this is a solid performing device there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Galaxy S9+ reboots on its own issue.

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How To Fix Samsung Galaxy S9+ Reboots On Its Own

Problem: S9+ running Android 8.0 Has been running perfect since I got it 3 months ago, just recently I’ve noticed it reboots on it’s own, but only when I have it in my pocket, or if I replicate that by covering all sensors at the top of the screen. This happens frequently. I’ve restarted, cleared cache, and have done a reset settings. Before I do a factory reset I’m hoping someone out there will have a better solution. I did get an update Nov 29 which seems to coincide with when this issue began.

Solution: Before performing any troubleshooting steps on this phone it’s best to make sure that your phone is running on the latest software version. If an update is available then I suggest that you download and install it first.

Perform a soft reset

The first thing that you will need to do whenever your phone unexpectedly reboots randomly is to do a soft reset. This will usually fix issues caused by minor software glitches as it will refresh the phone software.

  • Press and hold the Power and Volume down key for up to 45 seconds.
  • Wait as the device restarts.

Remove the micro SD Card

If your phone has a microSD card installed then I suggest that you remove it as this can also cause the problem especially if it has some corrupted sectors. Once the card is corrupted it can cause the phone to have difficulty in accessing the data stored in it and will usually cause the device to reboot.

Check if the issue occurs in Safe Mode

One factor that can cause this problem is an app you downloaded to the device. To check if this is the case you will need to start the phone in Safe Mode since only the pre-installed apps are allowed to run in this mode.

  • Turn the phone off.
  • Press and hold the Power key past the model name screen appearing on the screen.
  • When SAMSUNG appears on the screen, release the Power key.
  • Immediately after releasing the Power key, press and hold the Volume down key.
  • Continue to hold the Volume down key until the device finishes restarting.
  • When Safe mode appears in the bottom left corner of the screen, release the Volume down key.

In case the phone does not reboot in this mode then it’s likely that the problem is caused by an app you downloaded. Find out what app this is and uninstall it.

Wipe the cache partition of the phone

The phone system cached data is used to speed up the access to your phone apps. Sometimes this data can get corrupted which results in issues occurring on the device. To check if a corrupted cached data is causing the problem you will need to wipe the cache partition of the phone from the recovery mode.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key to highlight “wipe cache partition.”
  • Press the Power key to select.
  • Press the Volume down key to highlight “yes” and press the Power key to select.
  • When the wipe cache partition is complete, “Reboot system now” is highlighted.
  • Press the Power key to restart the device.

Perform a factory reset

One last troubleshooting step you should consider is a factory reset. This will revert your phone back to its original factory condition. Make sure to backup your phone data before doing the reset as it will be deleted in the process.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  • When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

In case the phone still reboots even after performing the troubleshooting steps listed above then this is most likely caused by a faulty hardware component, possibly the display or display controller. The best thing to do right now is to have the phone repaired at a service center.

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