Samsung Galaxy S9 won’t turn on after charging overnight (easy fix)

There are times when problems occur and make the firmware crash. They’re not necessarily serious problems but they may leave your phone unresponsive. Such is the case with some of our readers who contacted us because their Samsung Galaxy S9 units reportedly won’t turn on anymore after charging overnight. Others even speculated that their phones may have overcharged but we know that won’t happen as long as you’re using the original charger.

In this post, I will share with you the solution that’s very effective in fixing this kind of problem. But before I give you that, I would assume that your Galaxy S9 doesn’t have any signs of physical damage or even trace of liquid that may have gone beyond the outside case and messed up the circuits inside. Physical and liquid damages have be dealt by an authorized technician or someone who has sufficient know-how in repairing smartphones.

For owners who are looking for a solution to a different problem, drop by our troubleshooting page for we have already addressed some of the most common problems with this device. Browse through the page to find issues that are similar with yours and use the solutions we suggested. If they don’t work or if you need further assistance don’t hesitate to contact us by filling up our Android issues questionnaire.

How to fix Galaxy S9 that won’t turn on after overnight charging


While it may seem like a serious problem but as long as the phone doesn’t have any signs of physical and liquid damages, you can fix it on your own and here’s what you need to do about it:


First solution: Do the Forced Reboot

If you’re familiar with battery pull procedure that we often do to phones with removable battery when they crash, well, it’s similar to that only that we do this with phones that have non-removable batteries. Your phone is hard-wired to do this method if the combination is done correctly. In fact, it’s the only thing that could make your device respond if the problem is indeed a firmware crash. This is how you do it:

  • Press and hold the Volume Down button and the Power key simultaneously for 10 seconds or more.

If the combination is performed correctly, your S9 will reboot normally and boots up to the Home screen. You can then continue to use it however, there’s no guarantee the problem would never happen again in the future.

On the other hand, if your Galaxy S9 doesn’t respond to it, try doing it a couple more times to make sure your doing it right. Or, you may try this instead:

  1. Press and hold the Volume Down button and don’t release it.
  2. Then, 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 to simulate battery disconnect.

It’s similar to the first procedure only that we’re making sure that you press and hold the volume down button before pressing the power key because that’s the way it should be. Pressing and holding the power key first won’t give you the same result and the Forced Reboot won’t be performed. However, if your phone is still not responding after this, then you have to move on to the next procedure.

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Second solution: Charge your phone and do the Forced Restart

An empty battery is naturally not a problem with smartphones as you can charge it again. But the thing is, when you let your phone run out of battery, some services and hardware components may not be properly shut down and that could result to a firmware or system crash. When this happens, you already have a phone that won’t respond plus the phone doesn’t have enough juice to power it up even if you tried doing the forced restart. In that case, here’s what you should do:

  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 Galaxy S9 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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