Samsung Galaxy S9 Plus turned off and won’t turn on after updating to Android 9.0 Pie

When a high-end device like the Samsung Galaxy S9 Plus turns off by itself and won’t turn back on, the problem could either be with the firmware or the hardware and it could be a minor or very serious one. Some of our readers contacted us about this problem that reportedly started after the Android 9.0 Pie update. Could it be that the Pie update is bad?

As the owner, the least you can do is troubleshoot your phone and see if you can make it work like before again. But here’s the thing, as long as the phone doesn’t have physical or liquid damage, you can almost expect that it’s just a minor issue. So, if you’re one of the owners of this phone and are currently facing similar problem, continue reading as this article may be able to help you one way or another.

Before going further, if you found this post because you were trying to find a solution to your problem, then try to visit our troubleshooting page as we’ve already addressed most of the commonly reported issues with the phone. We’ve already provided solutions to some of the problems reported by our readers so try to find issues that are similar with yours and use the solutions we suggested. If they don’t work for you and if you need further assistance, fill up our Android issues questionnaire and hit submit.

Here are the things you can do if your Galaxy S9 Plus turned off after updating to Android Pie and won’t turn back on…

  1. Perform the Forced Reboot procedure.
  2. Connect phone to the charger and force restart it.
  3. Try starting it up in recovery mode.
  4. Bring phone to shop so tech can check it for you.

After a major firmware update, the cache and other system files may become corrupt or no longer compatible with the new firmware. It may result to a system crash and leave your phone unresponsive. While it may seem like a serious hardware problem, in reality it’s not. It’s actually just a very minor firmware issue that you can fix in a matter of seconds. With that said, the first thing you must do is the Forced Reboot procedure:

  • Press and hold the volume down button and power key for 10 seconds or more.

Your phone may boot up after doing this but if not, then try this instead:

  1. Press and hold the volume down button and don’t let it go yet.
  2. Now, press and hold the power key while holding down the volume down button.
  3. Keep both keys held down together for 10 seconds or more.

It’s actually the same as the first procedure only that we’re making sure you’re doing it correctly. If the phone is still not responding after this, then try doing this:

  1. Plug the charger to a working wall outlet.
  2. Connect your phone to the charger using the original USB cable.
  3. Regardless whether your Galaxy S9 Plus shows the charging symbol or not, leave it connected to the charger for at least 10 minutes.
  4. Now, perform the forced reboot again by pressing and holding the volume down and power keys at the same time for 10 seconds.

Most of the time, if the problem is due to a firmware crash, these procedures will fix it. However, if the phone is still not turning on after doing these, then you must try running your phone in recovery mode and perform a master reset if you can successfully make it to boot up.

It’s possible that it’s just a firmware issue and even if it’s serious, the phone would still be able to boot up in recovery mode as it’s the fail-safe for almost all Android devices. Here’s how to run the phone in recovery mode and perform the master reset:

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

If your phone is still not responding after this, then it’s time to bring it to the shop as it’s probably a hardware problem that occurred after the update.

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Harold Hisona

Harold has been in the tech industry since 2008 when he started out as a tech support for companies like Time Warner, Comcast and Tracfone. He’s been troubleshooting phones when the smartphone industry started booming. During his tenure as a tech support, he’s already been writing for various tech blogs and doing some freelance SEO. In 2012, he joined a small team of bloggers to write for The Droid Guy, and he has been with the company ever since. Today, he doesn’t only write tutorials and troubleshooting pieces but also shoots and edits videos for The Droid Guy channel while trading stocks on the side. Contact me at Email

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