lock screen never turns off - Samsung Galaxy A20 Questions & Answers

Hi guys When I lock my phone with power key the lock screen appears just after I release the key. And the lock screen never turns off!!! I tried to lock it again more and more with power key but the screen won't be turned off with any force. The screen appears just after I release the key. I don't know what to do?!! Noted that when the phone charging the lock screen goes off in very normal mode. I checked the timeout, smart stay, sleep and so more....

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If you hit the power button on top of the phone that does it IIRC (obviously don't hold the button otherwise you turn it off!)
I use S2U2 and this is how I lock the phone

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Hello,
I have a strange problem with my Nexus. My power button is acting strange. Long hold brings up power menu, but:
- short press does not turn screen off
- Smart cover also does not turn screen off
- double tap to status bar does not turn screen off
- 15 seconds of timeout also does not turn screen off.
What is happening? Thank you.
So your screen will not turn off at all besides powering off the device?
PrizmaticSmoke said:
So your screen will not turn off at all besides powering off the device?
Click to expand...
Click to collapse
Thats right.
Well i don't think the power button itself is the problem since it works to power it off and on, and since the screen wont sleep by other methods either.
Did you flash a new ROM, kernel, or other mod before this happened?

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When the screen is locked, screen black (sleeping during standby), I press the power button to wake up the screen. The time will have a 1 sec delay then update to correct time. See video from 2.18min https://www.youtube.com/watch?v=ahYMMGJyuS0
How to solve the problem?

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