What to do with your Samsung Galaxy S9 that turned off by itself and became unresponsive (easy steps)

It seems that many Samsung Galaxy S9 owners have encountered having their devices turn off on them for no apparent reason and the worse thing is they no longer respond after powering down. It means they would no longer power on no matter what users do. Is it a serious hardware problem or could it be just a minor issue with the firmware? Depending on how the problem occurred, we really can’t be sure if it’s just a minor issue or a very complicated one.

In this post, I will walk you through in troubleshooting your Galaxy S9 that turned off by itself and would no longer respond after that. We will consider every possibility and rule them out one by one until we can determine what the issue is all about and what needs to be done to fix it. So, if you’re one of the owners of this device and are currently having similar issues, continue reading as this post may be able to help you.

Now, before anything else, if you have other issues with your phone, make sure you drop by our troubleshooting page for we have already provided solutions to hundreds of problems reported by our readers. Odds are that we may have already provided a solution to the problem you currently have so try to find issues that are similar with yours on that page and feel free to use the solutions we suggested. If they don’t work or if you need further assistance, fill up our Android issues questionnaire and hit submit to contact us.

How to fix Galaxy S9 that turned off and no longer responds


More often than not if a phone turns off by itself and would no longer respond, we will immediately think that there’s a problem with the hardware. But this kind of problem is actually just a minor firmware issue provided that your phone hasn’t been dropped on a hard surface or got submerged in water for a long time. With physical and liquid damage set aside, here’s what you should do if your S9 won’t turn on or respond…

First solution: Forced restart

The most common cause why the phone turns off by itself and becomes unresponsive is a firmware crash. It happens all the time regardless of the model of your phone or how powerful it is hardware-wise. When it occurs, it will leave an impression that the phone has a serious hardware issue but in reality, it’s just a crash and there’s always something you can do about it. This is where forced reboot becomes very useful…

  • Press and hold the volume down and power keys at the same time for 10 seconds or more.

If the problem is indeed due to a system crash and that there’s enough battery to power it up, your device should already be booting up by now. However, if it remains unresponsive, try this instead:

  1. Press and hold the volume down button first and don’t release it yet.
  2. Now, press and hold the power key while you’re holding down the volume down button.
  3. Continue holding both keys for 10 seconds or more.

It’s basically the same as the first but we’re making sure this time you’re doing the combination correctly because doing it otherwise won’t give you similar result. If your phone is still not responding after doing this, then you have to move on to the next procedure.

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Second solution: Charge and Force Restart

You need to do this procedure to rule out the possibility that the problem is caused by both a drained battery and system crash. When the battery is already at a very low level and you’re still using the phone, the juice may run out with the phone still being used and this will result to a system crash as the hardware and firmware aren’t properly shut down. So, you’re actually dealing with a couple of issues here instead of one.

I said that your phone will always respond when the Volume Down and Power keys are held together for a certain amount of time but if the battery is drained, there’s no way your phone will actually turn on. So, try doing this:

  1. Plug the charger to a working AC outlet. Use a wired charger for this.
  2. Using the original cable, connect your phone to its charger.
  3. Regardless whether your Galaxy S9 shows the charging signs or not, leave it connected to its charger for 10 minutes.
  4. Now, press and hold the Volume Down button and don’t release it.
  5. While holding it down, press and hold the Power key.
  6. Keep both keys held down for 10 seconds or more.

If your phone indeed drained its battery and its firmware crashed, then it should be booting up now after you’ve done this procedure. However, if it remained unresponsive and you haven’t noticed any improvements, then it’s time to bring it back to the store or shop so that a technician can check it up for you.

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