How to fix Samsung Galaxy A5 (2017) that keeps restarting on its own (random reboot issue)

Today we address another common problem that many Galaxy users encounter — random restart or reboot issue. We want to answer a specific situation wherein a Galaxy A5 user continues to experience random reboot even after a factory reset. If you are in the same situation, learn what to do next.

Problem: Samsung Galaxy A5 (2017) keeps restarting on its own

Hello, I have a Samsung A5 2017.  This past month it has started switching off.  Have tried the hold power volume and home button and this used to switch it back on but doesn’t seem to work now.  I have had to let the battery completely drain, plug it into the chargers then the empty battery shows on the screen.  So I let it charge for a while it goes on but again goes off after a few hours. There is a crack on corner off screen.  would it be the cracked screen that is causing it to crash? I have already done a factory reset and system update and will only go back on when battery is completely dead and I plug it in.  I am out of options now.

Solution: Looks like you’re actually right to say that you’ve run out of options at this time. You only get a cracked screen when the phone is physically impacted or dropped so the cause of the problem most probably goes beyond it. There must be a deeper issue that forced your device to reboot on its own, or fail to power back up. That nothing changed after doing a factory reset is a sign that there’s probably another hardware issue on the device. It can be a battery malfunction or a damaged Power Management Integrated CIrcuit.

Create a backup

While you still can, we strongly suggest that you copy all files that you can’t afford to lose to another device or to a computer. With this issue, your phone has become unreliable and may fail any time. Making a backup at this time is a wise move, especially if you have many things saved in your phone. If you have an SD card inserted, move important photos and videos to it.

Calibrate the battery

In case the problem is caused by Android being unable to keep track of the true battery levels, we suggest that you calibrate it at this time. If Android does not get accurate battery readings, it may restart randomly or fail to power back up when restarted.

To calibrate the battery:

  1. Drain the battery completely. This means using your device until it powers down by its own and the battery level reads 0%.
  2. Charge the phone until it reaches 100%. Be sure to use original charging equipment for your device and let it charge up completely. Do not unplug your device for at least two more hours and also don’t use it while charging.
  3. After the elapsed time, unplug your device.
  4. Restart the device.
  5. Use your phone until it completely runs out of power again.
  6. Repeat steps 1-5.

Observe in safe mode

In case the reason for the problem is one of your apps, you can also try to boot the phone to safe mode. In this mode, all downloaded apps are suspended. So, if the phone is stable and restarts normally, it can be an app issue.

To boot your device to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.
  8. Observe the phone while it’s on safe mode for at least an hour.

To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your A5 is still problematic, repeat steps 1-4.

Get help from Samsung

The most likely solution for this issue is repair. If none of the suggestions above won’t change anything, contact Samsung and setup repair appointment. A technician needs to physically check the phone in order to determine if there’s any loose connection or damaged circuit and/or component.

TheDroidGuy Mailbag

🛠️If you have questions, check our Help section for details on how to submit your questions.💡

Photo of author

Harvey Hisona

Harvey is keen with mobile technology and loves writing about all things mobile. He is passionate in helping technology-challenged people by finding resolution to their issues. Contact me at Email

Posts you might like