What to do if Galaxy S8 Plus screen turns black

As promised, here’s another troubleshooting article for the Galaxy S8 Plus (#GalaxyS8Plus). Today’s post answers three common issues found on this device. If you’re reading this, you must have an S8 issue so be sure to scan the article and see if helps. We’ve already published quite a number of Galaxy S8 posts in the past so you can also make use of them if you like.

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Problem #1: What to do if Galaxy S8 Plus screen turns black

Hi. i’m having issues with my Samsung S8 Plus. the screen went completely black .i noticed some discolor in the display before it went total black .i took good care of it only thing is one day my way home from work it got hot sitting on my lap. it was a hot day and my phone said basically it was overheating and i turned it off. it worked fine for about 3 weeks. that’s when i noticed discoloring and one day i picked it up and nothing. it powers on and i can hear it taking pictures. i bought lcd and took it to a phone shop but the guy told me it’s doing same thing with the new lcd. on its powering up but no display and he didn’t know what the problem was. I’m hoping you can help me out. Thanx.

Solution: We’re not in a position to know the exact reason why your S8 Plus screen has stopped working. If a qualified technician has replaced the screen assembly properly and the issue remains, then the only logical reason for it must be a motherboard fault. For some reason, the phone’s graphics chip may had been damaged or is currently malfunctioning. Or there may be other hardware component that has failed. The prospects of your device does not look good at all and at this time, the least that you can do is to go through an expensive motherboard replacement. This will ensure that all critical components are renewed. The thing is, motherboard replacement is almost always impractical due to its steep price. To complete a motherboard replacement, you’ll most likely spend at least $300. The cost will go even higher depending on the shop you’ll go to. Forget about Samsung repair. Since a previous technician has already tampered with the repair when the LCD was replaced, they’ll not even take a look at your device. The best chance you have is to allow an independent shop replace the motherboard for you.

Problem #2: Galaxy S8 Snapchat app won’t send video

I can record a video on Snapchat but when I go to the next page and choose who I want to send it to, and push send the app will freeze right there and then. it will crash and never end up sending it. I just checked to see if I needed to update the app and I did have an update so I did that but the problem continued. Idk what else to do, I cleared any running device.

Solution: One of the effective ways to fix an app issue is to return it to its default state. If you’ve already updated Snapchat but that did not fix the issue at all, consider clearing its data. Here’s how to do that:

  1. Open Settings app.
  2. Tap Apps.
  3. Tap on More settings at the upper right (three-dot icon).
  4. Select Show system apps.
  5. Find and tap your app.
  6. Tap Storage.
  7. Tap Clear Data button.
  8. Restart your S8 and check for the problem.

There’s a chance that the problem may be caused by a third party app. If Snapchat still works erratically after updating it and clearing its data, you can try a more drastic troubleshooting step — factory reset. This will wipe your phone and return its software settings to defaults. Once you’ve factory reset the device, you can then check how Snapchat works, when there are no other apps installed.

Factory reset is, in fact, a bit extreme in this case but it’s the only other logical troubleshooting step that you can try other than reporting the issue to the developer. If you don’t want to factory reset your S8, then we suggest that you contact Snapchat developer. This won’t give you instant resolution but at least you can help Snapchat community. If there are other users having the same issue and they’ve also reported it before, the developer may look into the case and release a patch.

Problem #3: Galaxy S8 stuck in Samsung logo screen

Hi. My S8 is stuck on start up just on the Samsung logo part. that’s all it does. The logo will show for a time then go away for a few seconds, then vibrate logo pops up again goes on back n forth.

Tried soft reset and hard reset — nothing works. In fact can’t even turn off my phone. When I try with volume down and power button the logo goes and comes back. I got the phone from India and I live in London.

Solution: Did you try to tamper with the official software by rooting or flashing? If yes, then try to boot the device to Recovery Mode and do a master reset. It’s also a good idea to undo whatever you did prior to encountering the problem to fix the issue.

If the problem occured out of the blue and there was never any attempt to tamper with the software in any way, you can try a master reset via Recovery Mode. Here’s how to do that:

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

If nothing works after a factory reset, bring the device to your local Samsung service center so it can be repaired or replaced.


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Harvey is keen with mobile technology and loves writing about all things mobile. He is passionate in helping technology-challenged people by finding resolution to their issues.

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