How to fix Samsung Galaxy S9 that turned off by itself and won’t turn back on (easy steps)

There are times when firmware issues may seem like a problem with the hardware and one of the best examples is the concern sent by one of our readers. According to him, he charged the phone overnight because it turned off by itself. So, he left it connected to the charger (wired) overnight but in the morning, the phone is still not turning on and it won’t even respond to the charger. He thought the phone is already bricked until he contacted us.

In this post, I will share with you the solution we often use to address this kind of problem. You won’t believe how easy it is to fix a Samsung Galaxy S9 that turned off without apparent reason and refuses to turn back on. So, if you’re one of the owners of this device and are currently having similar issue, then continue reading as this article may help you one way or another.

Before anything else, if you have other issues with your device, try to browse through our troubleshooting page as we’ve already addressed several issues with this device. Odds are that we’ve already published a post that tackles similar problems. Try finding issues that have similar symptoms with what you currently have and feel free to use the solutions we’ve suggested. If they don’t work for you or if you still need our help, then fill up our questionnaire and hit submit to contact us.

How to troubleshoot Galaxy S9 that turned off and would no longer turn back on


While this issue may seem like a serious hardware problem, in reality it’s not and that is based on our experience. However, before we go any further, I assume that your phone hasn’t been dropped on a hard surface or hit by a hard object or submerged in water for a long time because if one these things happened, it might be  physical and/or liquid damage. There’s only so much you can do about it. If your Galaxy S9 turned off by itself without apparent reason and won’t turn back on, here’s what you should do…

First solution: Perform the Forced Restart procedure

This is the solution to the problem wherein the phone’s firmware crashed for some reason. It could be the case with your Galaxy S9 so this must be the first thing you should do. Press and hold the volume down and power keys at the same time for 10 seconds or more. If the phone reboots like it normally does, then the problem is fixed. However, if it still not responding after this, then you should try this steps:

  1. Press and hold the volume down button first and don’t release it.
  2. While holding down the volume down button, press and hold the power key.
  3. Keep both keys held down together for 10 seconds or more.

This procedure is basically the same as the first only that we’re making sure this time that you press and hold the volume down button before the power key because doing otherwise won’t give you the same result.

If the phone is still not responding after this, then move on to the next solution.

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Second solution: Try charging your phone and do the Forced Reboot again

Another possibility we have to consider is a drained battery. Of course you can immediately rule this out if your phone is frozen on a screen that still shows a picture. For instance, if you were texting when the phone crashed and the screen is frozen on the screen that shows your text. But then again, if that’s the case then the first solution should have already fixed the problem. So, if your device is stuck on a black screen and won’t respond, then there’s a possibility that the battery got drained plus the fact that the system may have crashed just before the battery runs empty. To rule this out, all you have to do is this…

  1. Plug the charger to a working wall outlet and make sure you’re using the original wired charger.
  2. Using the original power / data cable, connect your device to its charger.
  3. Regardless whether the charging signs are showing or not, allow the phone to be connected to its charger for 10 minutes.
  4. After which, press and hold the Volume Down button and don’t release it.
  5. Then, press and hold the Power key while holding down the Volume Down button.
  6. Keep both keys held down together for 10 seconds or more to simulate battery disconnect.

If the issue occurred due to a drained battery and firmware crash, your Note 8 should already be booting up by now. But if it still not responding, then it’s time to bring it back to the shop so that a technician can check it for you.

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