Solved Samsung Galaxy S8+ Screen Is Black But Calls Can Be Made

Welcome to another installment of our troubleshooting series where we aim to help our readers who own the #Samsung #Galaxy #S8+ fix the issues that they are experiencing with their phone. Today we will tackle the Galaxy S8+ screen is black but calls can be made issue and other related problems.

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S8+ Screen Is Black But Calls Can Be Made

Problem: I am having an issue with my Samsung Galaxy S8 plus phone’s screen as the display remains black. I had my phone throughout the day while at school, however, I noticed the battery was at 2% and was unable to charge it due to forgetting to bring the charger. I tried to charge the phone while my car and assumed that I was unable to turn it on due to low battery. However, when I went home, I charged my phone and when trying to turn it on nothing would show, except for the charging light (which turned green letting me know that it was fully charged, and red when it was charging) and it would vibrate. The lights still comes on letting me know that my phone is on, but the screen remains black.  I am not sure as to what the problem is, because calls can be made to it but the screen remains blank.

Solution: The first thing that you should do in this particular case is to perform a simulated battery pull. This is done by pressing and holding both power and volume down buttons for at least 10 seconds. Your phone should restart after this. In case the display is still black I recommend starting the phone in recovery mode then do a factory reset here. Take note that this will erase your phone data.

If the above steps fails to fix the problem then you will have to bring the phone to a service center and have it checked as this could already be caused by a faulty display assembly.

S8+ Screen Randomly Goes Black After Software Update

Problem: Ever since the last upgrade. My Galaxy S8+ screen will randomly go black with a small white line at the bottom of the screen. It will go off and on at night and this is quite disturbing.  The phone otherwise works fine but this feature is quite bothersome.

Solution: If this issue occurred right after a software update then it’s very likely that this is caused by old software data that has not been completely removed during the update process. This old data will usually cause a conflict with the new software version resulting in this issue. The best thing that you can do right now to fix the problem is to backup your phone data then do a factory reset. The issue should disappear after the reset.

S8+ Lines Appear On Screen when Brightness Level Is Low

Problem: I bought this phone about 2 months ago and it has been working fine. However it has suddenly, without any recent drops, started displaying strangely. The screen appears fine if the brightness is all the way up, but as I decrease the brightness lines appear through the screen and it turns a greeny/yellow tinge. The lines become more visible as the brightness is lowered until its hard to see at all. Just before the brightness is on the lowest, the lines disappear and the screen looks normal again. I have tried uninstalling the most recent apps and running in safe mode. Do you think this is a software issue and worth a hard reset or likely caused by a hardware issue.

Solution: The best way to proceed in this case is to check if a software glitch is causing the problem by doing a factory reset. Make sure to backup your phone data before doing the reset. Once the reset is complete do not install any apps in your phone just yet. Try checking first if the issue still occurs. If it does then this is most likely a hardware related problem already in which case you will need to bring the phone to a service center and have it checked.

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Chad Buenaflor

Chad has been in the tech industry since 2000. He has a degree in Electronics Engineering and is interested in the hardware and software side of technology. Initially working for a Japanese semiconductor company as a Test Engineer for nearly 10 years, he then pursued his passion for internet technology by working for the support team of Time Warner Cable then finally joining TheDroidGuy as one of their troubleshooting and tech writers. On his free time he plays his favorite games on his PC, Xbox Series X, and Android phone.

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