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Galaxy note 20 ultra black screen

(Topic created on: 4/7/21 11:21 PM)
userBzx8Cy2SiU
Asteroid
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Note20

Hello everyone! my galaxy note 20 ultra is 3 months old so far everything worked ok, yesterday all of a sudden just a black screen, I hear messages and calls coming in but there is nothing on the screen. The cell phone never dropped or anything else that happened, just a sudden black screen. does anyone know the solution or need to have it serviced?

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SamsungRei
Samsung Moderator
Samsung Moderator
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Note20

@Samsung_Q7nlI2E If after completing troubleshooting the screen is still black, then service is recommended. For service options, please reach out to us via one of the following options: 1. Facebook Messenger: http://m.me/samsungsupport 2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513- 3. Private Message: http://bit.ly/2XERsky



Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.



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14 Replies
TheGalaxy
Red Giant
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Note20
Try hard reset
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Note20

do you have exynos or snapdragon? try to report it on samsung members app if it happens again

userBzx8Cy2SiU
Asteroid
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Note20

i have exynos

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Note20

also, is this happening indoor or outdoor?

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userBzx8Cy2SiU
Asteroid
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it happened while my cell phone was in my pocket. i don`t understand question "indoor or outdoor"

Eddie11
Astronaut
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Note20
The issue is caused by the new update to 3.1. I had the same issue. Hard resets did not work. What ultimately fixed it was plugging the phone to my PC and, assuring that my PC picked it via USB connect, and leaving it there for about 20 minutes. Then, after 20 minutes, continously disconnecting and connecting the USB cable, ensuring each time that it was connecting and disconnecting via the prompts on my PC and phone vibration or sound.

The issue is caused by the camera update. The camera update was to suppose to ensure better focus and snappier response. However, if you open the camera by error in your pocket, or as you pick up the phone to use it, the phone crashes and the software can no longer display an image. The accidental launch of the camera is caused by pressing the side key assigned to the "Quick Launch" for the camera.

Further research and testing that I did also showed that the Always On Displayed was unstable after the OneUI 3.1 Update. In particular if you are running an animation with AOD.

The only thing I would like to know is if it's isolated to the AT&T Rom, or have others with different carriers experienced the same glitch/bug. What carrier are you guys on?
userBzx8Cy2SiU
Asteroid
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Note20

I don't know anymore if my cell phone is on or off, because I tried various methods that I found on google for that topic. your answer makes sense to me that this caused a black screen but i tried to connect the phone to my pc and i always get a tone like when i connect the charger, nothing happens on the pc. how to solve that part?

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Eddie11
Astronaut
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Note20
Go into the control panel and then select device manager. There you should see the devices connected to the PC. On average, anytime you connect a new device to windows, you hear a chime. If you're hearing that at least once, your establishing a good connection.

Connect and disconnect the phone to your PC about 5 times. Then, on the 5th reconnect, leave the phone connected and unattended for at least an hour. Afterwards, disconnect the phone and just wait until the screen comes back on. It took my phone a out an hour after I disconnected it from the PC to get the screen to come on. Just check it once every hour thereafter.

While this method did work for me, the issue for you might be more severe. BEST BUY has a Samsung Service center that can instantly reboot the phone via their own Samsung software. Even if you did not get the phone from best buy, a nice tip to a geek will suffice to get you help.
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userBzx8Cy2SiU
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all this is clear to me, but when I connect the mobile phone, I only hear the charging sound on the mobile phone, nothing happens in the device manager, ie there is no sound or icon that something is connected to the PC. I left the cell phone so connected that it charges to the end, a notification came to the PC to download the samsung dex program, and I tried to install the program, but it always says to connect the cell phone to the PC for the program to continue working. i tried several times to turn off and then plug in the cable but just nothing happens. i tried to take out the pen and so i figured out that the cell phone works has vibration and the sound of the pen but on the pc it doesn't show that it is connected, nor in the device manager.

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