How to fix a Samsung Galaxy S9 that suddenly went dead and won’t turn on (easy steps)

When all of a sudden your Samsung Galaxy S9 goes dead and won’t turn, it denotes that your device has crashed. Usually, this occurs due to major software errors like when you’re attempting to run a corrupted file or bad app and thereby causing the phone system to crash. What happens is that your device still got power but just couldn’t continue to run as it’s stuck on black screen. In this case, it’s a software issue, which means can be rectified by some workarounds. However, if  your Samsung S9 went dead and won’t turn on after it fell on the ground or got soaked in the water, then that would be a different story. Apparently in this case it is a hardware issue. The phone might have been damaged physically and so it needs service. To save time and effort, be sure to determine the underlying causes beforehand. If your phone just died and refused to turn on again without any prior instances of dropping or liquid exposure, most likely the problem is attributed to a system error. Should this be the case, you can try the following workarounds and attempt to fix your device at home.

Before going further, if you found this post because you were trying to find a solution to your problem, then try to visit our Galaxy S9 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.

How to fix Galaxy S9 that won’t turn back on after turning off by itself

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It may seem like a complicated hardware problem but in reality, this issue is pretty easy to fix. Try to go through the solutions below as one of them should work for you…

First solution: Force restart your Samsung S9.

A forced restart will likely fix the problem if it’s mainly due to a minor software glitch, like some buggy contents or rogue apps. Many software-related issues in mobile devices were dealt with successfully by this procedure including stuck or frozen displays. Your Samsung Galaxy S9 might be just stuck on a black screen so it likewise can be remedied by a forced restart. So give it a shot and do so with these steps:

  • Simultaneously press and hold the Power and Volume Down buttons for about 30 to 45 seconds and then release both keys when the phone restarts.

The above procedure depicts a simulated battery removal, a method that does and yields the same positive outcome as the usual reboot procedure without deleting any of your important data and personal information stored on the phone’s internal memory.

Second solution: Plug in to charge then force restart.

Some apps can go rogue and may cause massive power drain on the phone. With these apps draining much power even when they’re idle or not running, it’s possible for your device to abruptly shut down.

To make sure your phone hasn’t just completely run out of battery, try to plug it into the wall outlet and let it charge for a few minutes. When you see the charging/battery indicator on your phone screen, force it to restart. If it successfully boots up, allow it to charge a little longer until the battery reads 50% or beyond. At this point, boot your phone into safe mode and then uninstall any app you suspect is using up much power on your device. Most likely it the most recent app you’ve downloaded on your phone before it went dead. You can also check the battery usage and view which from among your apps consumed a massive amount of power on your phone.


Third solution: Remove SD card then force restart.

If you have one inserted, try to remove it and then turn your phone on without any SD card inserted. It is possible that some of your files stored in the SD card crashed or got corrupted thereby causing the phone system to crash as well. Here’s how to remove the SD card from your Samsung Galaxy S9:

  • With your phone powered down, insert the SIM removal tool into the tiny hole on the SIM card/memory card tray then push until the tray pops out.
  • Remove the SD card from the SD card slot.
  • Put the tray back into place and push it back in.

When the tray is secured in place, attempt to power on your phone. If this doesn’t help, then move on to the next workaround.

Fourth solution: Access phone system using Smart Switch.

If you’ve got Smart Switch installed on your computer, try to access your phone on your computer using Smart Switch. You can use the Smart Switch PC version to move your important contents from your phone to your computer for safekeeping. To get started, connect your phone to your computer using the original USB/data cable. Open or run the Smart Switch software on your computer then see if it’s able to detect or read your phone.

If you are able to access your device through Smart Switch on a computer, you will be prompted with a series of onscreen instructions (wizard). Follow the onscreen prompts to back up all your important data from your phone so you’ll be all set to perform a hard reset afterwards.

Fifth solution: Use Android recovery/repair tool.

Alternatively, you can try using an Android recovery tool to recover your files and restore your phone. A more serious system error might have occurred on your phone and that error is making it stuck on black screen death. This is where Android recovery/repair tools play their part. Just download and install the most credible software on your computer. Once you’ve picked your preferred software, plug your Samsung S9 into your computer using the supplied USB/data cable. Run the software then try to see if it’s able to access your phone system. Usually, you will be prompted with onscreen instructions on what to do next once your device is recognized by the software. Just follow the prompts to complete the recovery and repair procedures.

Service/repair options

If none of the prior methods is able to help and that your Samsung Galaxy S9 remains stuck on black screen and refuses to power on, then at this point you should consider opting for service. Your device might have acquired any sort of physical or liquid damage way back then and eventually the worst symptom has just manifested. Symptoms of liquid damage may surface sooner or later so it might be it. Don’t forget to avail for warranty if your phone is still eligible. It will help you save some money from service charge.

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