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Galaxy J7 Pro screen stopped working after charging (black screen issue)

Many Android owners usually don’t know what to do if their device’s screen stopped working all of a sudden. As described below, a Galaxy J7 Pro screen stays black after leaving the device charged all night but the phone is definitely not totally dead. If you have a similar situation, learn what to do below.

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Problem: Galaxy J7 Pro screen stopped working after charging (black screen issue)

I was using my J7 pro on tuesday night… it was already at 2% charging, but i still used it to play youtube videos of lullabies for 2hours to sleep.. it was charging the whole night but youtube was left playing. so i guess it was drained, so i charged it more in themorning and in the afternoon. but still it wont turn on.. it doesnt even display an icon of charging, JUST BLACK SCREEN. i tried doing those pressing the keys,like volume down and power button and etc but it only VIBRATES AND BLINK, Just nothing worked.. I tried to call mynumber but my phone doesnt ring, but when i tried to swipe the screen in attempt to answer it, surprisimgly I can answer the calland i can talk and hear my voice clearly.. so i stopped charging it because its already working on but DISPLAYS NOTHING. It even rings shortly during the alarm time in the morning.. please help me, thank you!

Solution: There may be an app or  software bug that prevents the screen from working normally. To see if that’s the case, follow our suggestions below.

Boot to Safe Mode

This should be the first troubleshooting step that you want to do. While on safe mode, your device will suspend downloaded apps and only allow those that came pre-installed with the operating system. To restart your J7 Pro to safe mode:

  1. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Safe Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before continuing.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.

If the screen works on safe mode but not when restarted to normal mode, you can bet a bad app is the culprit. To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your J7 is still problematic, repeat steps 1-4.

If the screen remains black after attempting the steps above, try to see if works on Recovery Mode or Download Mode.

Restart the phone to alternate boot modes

There are two other software environments that work independently of Android — Recovery Mode and Download Mode. Either of them does not depend on Android OS to work properly so they’re used by technicians to troubleshoot devices they suspect has software issues. If the bug that causes black screen issue on your phone is due to an Android issue, the screen should work fine on either Recovery Mode or Download Mode.

How to boot a Galaxy S9 to Recovery Mode

  1. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Recovery Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before booting to Recovery Mode.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. 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).

If the screen works on Recovery Mode, you can try to wipe the cache partition or do factory reset.

How to boot a Galaxy S9 to Download Mode

  1. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Recovery Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before booting to Recovery Mode.
  2. Press and hold the Volume Down key and the Bixby key, then press and hold the Power key.
  3. You’ll know if you’re on Download Mode when you see a screen that says “Downloading….”
  4. Remember, if the screen works in any of these modes, that’s a clear sign that you have an Android OS issue. Be sure to factory reset the device in Recovery Mode to fix it.

If the screen only works on Download Mode, there may be an issue with Android. In this case, you can try to reflash the stock firmware to fix the issue. Use Google to know how to do this solution.

Get Samsung’s help

If you are unable to make the screen to work after attempting all the suggestions above, you should allow a professional check the screen. There must be a deeper reason for the problem so repair is a needed.

 


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