How to fix your Samsung Galaxy A3 (2017) that keeps restarting on its own [Troubleshooting Guide]

One of the signs that your phone has some issues with its firmware is when it starts to reboot on its own without apparent reason or cause. Such is the case with some of our readers who own the Samsung Galaxy A3. Others said that prior to the update, there was a minor update for the firmware and shortly after it was installed, their phone started to restart. Some, however, don’t have a clue as to why the problem started.

In this post, I will walk you through in troubleshooting your Galaxy A3 that keeps restarting on its own without apparent reason. We will look into every possibility and rule them out one by one until we can easily determine what the problem is and formulate a solution that might fix the problem for good and bring your phone to its perfect performance. If you’re one of the owners of the Galaxy A3 and are currently bugged by a similar problem, continue reading below as this post may be able to help you.

Before we proceed, if you are looking for a solution to a different issue, make sure you drop by our Galaxy A3 troubleshooting page as we’ve already addressed the most common problems reported by our readers. Find ones that are similar with yours and use the solutions we suggested. If they don’t work for you or if you need further assistance, fill up our Android issues questionnaire and hit submit to contact us.

How to troubleshoot Galaxy A3 that keeps rebooting

Problem: Hello guys. I own a Galaxy A3 phone and if I’m not wrong, there was an update almost a week ago and I think I downloaded it and it was installed successfully. After that, however, the phone started to reboot on its own regardless of what I’m doing. It rebooted while I was texting, using FB, on a call, etc. It’s very annoying already and I just want it to be fixed. Can you help me? Thanks.

Troubleshooting: When a phone starts to reboot frequently on its own it might be having problems with its battery or it could be a sign of a serious firmware issue. Our troubleshooting will be centered on determining what this problem is all about so that we can try to formulate a solution that may fix the problem for good so that you can use your phone normally. With all that being said, here’s what you should do about this:

Step 1: Charge your phone and continue using it

Find out if the phone still reboots on its own even if it’s charging. If it continues to operate normally when plugged in, then it’s clear enough that it’s the battery that has some issues and may already need a replacement. When the phone is charging, it has a stable power source and since it doesn’t restart on its own, it hints that its battery may already be failing from time to time and that might be the reason it restarts.

However, if the phone continues to reboot on its own even if it’s plugged in, then we might be looking at a possible firmware issue. In this case, move on to the next step.

Step 2: Run your phone in Safe mode

There have been cases wherein third-party applications that keep crashing caused some phones to restart but in this case though, the reboot may only occur if the owner uses the app that already has some issues. Nevertheless, it’s a possibility and we need to rule it out before we move on to other troubleshooting procedures. So, to isolate the problem effectively, you need to reboot your phone in safe mode to temporarily disable all third-party elements. Here’s how you do it:

  1. Turn the device off.
  2. Press and hold the Power key past the screen with the device name.
  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’.

If the restarts disappear while in safe mode, then it’s clear that they’re caused by third-party apps and in that case, move on to the next step, otherwise, skip to step 4.

Step 3: Update, reset and uninstall suspected apps

Assuming the problem doesn’t occur while the phone is in safe mode, then you will need to find the app that’s causing the problem but it’s easier said than done especially if you’ve already installed a lot of apps. So, the first thing you have to do is update apps that need to be updated because possible it’s just a compatibility issue:

  1. Tap Play Store.
  2. Tap the Menu key and then tap My Apps. To keep your apps automatically updated, tap the Menu key, tap Settings, and then tap Auto-update apps to select the check box.
  3. Choose one of the following options:
    • Tap Update [xx] to update all applications with updates available.
    • Tap an individual application and then tap Update to update a single application.

After the update, reboot your phone back in normal mode and continue using it until it reboots again. Then the next thing you must do is reset the app that you suspect is causing the problem and by this, I mean clear its cache and data:

  1. From any Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Applications.
  4. Tap Application manager.
  5. Find and tap the app you suspect.
  6. Tap Storage.
  7. Tap Clear cache.
  8. Tap Clear data and then tap OK.

Again, you may need to reboot your phone back in normal mode to verify if the problem is fixed. If not, then reboot in safe mode one more time and uninstall the app you just reset:

  1. From any Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Applications.
  4. Tap Application manager.
  5. Tap the desired application
  6. Tap Uninstall.
  7. Tap Uninstall again to confirm.

This step alone may take the entire day without even a guarantee that the problem can be fixed. But if backing up your files and data is much quicker and easier to do than finding the culprit, I suggest you do so and just reset your phone. That will surely speed things up provided the problem doesn’t occur in this mode.

  1. From the Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Backup and reset.
  4. If desired, tap Back up my data to move the slider to ON or OFF.
  5. If desired, tap Restore to move the slider to ON or OFF.
  6. Tap Factory data reset.
  7. Tap Reset device.
  8. If you have screen lock turned on, enter your PIN or password.
  9. Tap Continue.
  10. Tap Delete all.

Step 4: Delete all system caches so they’ll be replaced

After doing all the previous steps and the problem still persists, it’s safe to assume now that the problem is with the firmware. But instead of doing a master reset right away, try to go after the system caches first because frequent reboots are also a sign that some caches got corrupted for some reason. Try to delete all system caches first so that the firmware can create new ones and you can do so by running your phone in Recovery Mode and wiping the cache partition:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  3. When the device logo screen displays, release only the Power key.
  4. 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).
  5. Press the Volume down key several times key to highlight ‘wipe cache partition’.
  6. Press the Power key to select.
  7. Press the Volume down key to highlight ‘yes’ and press the Power key to select.
  8. When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.

If your Galaxy A3 still reboots after wiping the cache partition, then it’s time to reset it.

Step 5: Backup your important files and reset your phone

As long as you didn’t try to modify the firmware, this problem can be fixed by a reset because it’s clear now the issue is with the firmware. However, you will need to make a backup of your important files and data that you don’t want to lose because they will be deleted during the process. The backup may take several minutes to complete depending on how much data you need to sync or copy. But after which, take note of your Google ID and password as you will be using it to set up your phone after the reset. Once everything is taken care of, follow these steps to reset your phone:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  3. When the device logo screen displays, release only the Power key
  4. 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).
  5. Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

What we actually did was rule out every possibility without compromising your files and data but in the end when everything else failed, we did a reset to bring the phone back to its original configuration. I hope this troubleshooting guide helped you.

Connect with us

We are always open to your problems, questions and suggestions, so feel free to contact us by filling up this form. This is a free service we offer and we won’t charge you a penny for it. But please note that we receive hundreds of emails every day and it’s impossible for us to respond to every single one of them. But rest assured we read every message we receive. For those whom we’ve helped, please spread the word by sharing our posts to your friends or by simply liking our Facebook and Google+ page or follow us on Twitter.