Black screen - Samsung Galaxy S9+ Questions & Answers

I just got this s9 plus yesterday, I do the necessary settings and updated it but whenever I want to login my mail, it won't let me but turn to black screen without seeing anything on screen again except black screen ,screen will come to normal after I locked and unlocked the phone.. please what can cause this and solution to it

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[Q] screen problem - please advise

Hello
Today my atrix screen suddenly started to show bright stripes from top to bottom of the screen in every screen column which is not black.
This problem started after I replaced to an older sim to import some missing contacts , but it happen only after I returned to my regular sim card.
I tried to take off the battery and return, didnt work.
I tried to do a factory reset from the recovery and re-install my rom, didnt work.
I am adding a pic of the screen (its open in the apps screen)
Please let me know if there is any software solution to this or is it a hardware problem that requires replacement/fix
(this is an AT&T atrix with open bootloader and with alien rom installed).
Thanks !
update : now I somtimes dont get any picture on the screen when I turn the screen on
I would guess its a problem in the LCD I just dont understand how can the LCD stop working after only 4 month...

Security/2nd screen notification question

Now that Verizon has fixed the fingerprint scanner/case issue, I'd like to start using the scanner but have run into something somewhat annoying.
Before the software upgrade, the notifications on the 2nd screen had a black background/white font (I had no lock screen security, only swipe to unlock the screen). To use the scanner, I have to set up a PIN but, with that PIN set-up, the 2nd screen notifications are now bright white instead of the preferred black - to me, the white is so glaring...guess I'm picky like that.
Anyone know of a way to get the black background instead of the white, while still being able to use the scanner? I'm pretty sure this is a "feature" of having the lock screen security set up but was hoping someone might have run into this and found a solution on how to get back to the black banner.
Thanks!

How to get display working?

Hello!
I have changed the display for LG E975 phone, but when I turn on the phone the phone screen remains black with some blink of white screen. When I put back old display it has stopped to give the picture. I can't see the picture and I have not activated LG On-Screen Phone. The phone is able to start, when Android loads I can hear when the new mail is received. This is happening with both new and old display. How to troubleshoot / solve this?
Thanks!

replacement screen doesnt unlock after screenlock

Hey guys.
I replaced my camera module and since in this process i broke the screen, i also replaced the display.
now the display works, but is ghosting, and even worse, when the display is turned of for a running phone, the screen will remain black.
When i restart, the screen works, the blackscreen comes only when i turn the screen off or screenlock kicks in
any ideas would be appreciated!

Screen became brownish without Night mode or Reading mode on

In my Mi10[Model M2001J21 which is not Bootloader unlocked and not rooted] the screen became brownish yesterday night.I did not turn on Night mode or reading mode.Only in Settings screen the screen appears in pure white.How I can make the screen pure white in home screen and all apps.Is my display got damaged?Do I have to go to the Mi Service Center to get the screen back into pure white? Anybody please help.Waiting with thanks....

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