Solved Samsung Galaxy S9+ Automatically Turning Off

The #Samsung #Galaxy #S9+ is one of the premium Android smartphones released this year that uses some of the latest mobile technology available. While it shares a similar design as last year’s S8+ model it is far superior as it uses upgraded components. One of the main feature of this phone is its use of the Snapdragon 845 / Exynos 9810 processor which when combined with its 6GB of RAM allows for multiple apps to be run smoothly. Although this is a solid performing phone there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Galaxy S9+ automatically turning off issue and other related problems.

If you own a Samsung Galaxy S9+ or any other Android device for that matter then feel free to contact us using this form. We will be more than happy to assist you with any concern that you may have with your device. This is a free service we are offering with no strings attached. We however ask that when you do contact us try to be as detailed as possible so that an accurate assessment can be made and the correct solution can be given.  

If you would like to browse the previous parts in this series then check out this link.  

S9+ Automatically Turning Off

Problem: Hi im using an S9+ . At First it started having automatic turn off issues when i play videos, then I restored it to factory settings,and it still does it.I suspected its the battery,since it wont charge up anymore. So 1 day I brought it to the service center, and there it charged up, and when it turned on, it asked for my email and some info’s,then as when i entered the password, it turned off again while it is still being charged. Now when I’m trying to revive it, it keeps on flashing ands restarting the samsung logo . I did the press power button + volume down, it still flashes the logo. I did the press power button + volume down + home button, it just stays in downloading mode for about 10 hrs. I did the connect to computer and it start up from samsung S9 plus then samsung logo then restarting android and then back to samsung S9 plus. . Please help me I am desperate

Solution: It appears that this could already be caused by a faulty hardware component. Since you have already performed a factory reset and the phone still turns off even when connected to the charger then this might be due to a bad battery or power IC. I recommend that you bring this phone to an authorized service center and have it checked.

S9+ Stuck In Samsung Logo

Problem: Hello, i hope you can help. I’ve asked all the tech brains I know but no one seems to be able to tell me what is wrong with my S9 plus.  It was working fine and then just stopped. I’ve tried rebooting and tried your of soft reset by pressing and holding the power and volume down button.  It only displays the Samsung , powered by Android page and then goes black. It refuses to turn fully on. At first I thought it was a battery issue but after charging and the battery turns to a 100% green, it’s still not turning on.   Any ideas what I should to do to fix this? Is it a Samsung software issue? If so, do you know how I can get it resolved. My phone was purchased in Berlin and is unlocked using Sim cards; no carrier contract.

Solution: If your phone has a microSD card installed then I suggest that you remove it first. Once the card has been removed proceed with the troubleshooting steps listed below.

  • Start the phone in Safe Mode. If the phone can start in this mode then the problem could be caused by an app you downloaded. Find out what app this is and uninstall it.
  • Wipe the cache partition of the phone from the recovery mode.
  • Start the phone in recovery mode then do a factory reset. Take note that this will erase your phone data.

If the above steps fails to fix the problem then you should bring the phone to a service center and have it checked.

S9+ Will Not Charge

Problem: My Galaxy S9 plus will not charge. I tried troubleshooting with it by holding down the volume up, power key and menu key out at the same time but but it didn’t work. I use a different chord, outlet and ports and it still doesn’t work. So I went out and bought myself a wireless charging pad which works and the little green light turns on however my phone is still unresponsive and black. Please tell me if there’s anything else I can try before taking it in.

Solution: Try cleaning the charging port of the phone using a can of compressed air. Make sure to remove any dirt or debris stuck in this port. Once the port is clean try charging the phone with its wall charger. In case the phone does not charge try using a different charging cord. You should also check if the phone can charge from a computer USB port.

Once the phone has charged try turning it on by pressing and holding both power and volume down buttons for at least 10 seconds. If this does not work then try starting the phone in recovery mode then do a factory reset. Take note that this will erase your phone data.

If the above steps fail to fix the problem then you should 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. Contact me at Email

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