Mi 11 Ultra Touch screen calibration

[msssm]

Hi,
since today I have issues with the touch screen on the Mi 11 Ultra. I can't get the notifications and control center swiped down or only hardly. When the notifications are finally opened, they disappear after 1 sec. just as if the touch has some ghost touch somewhere. I already removed all case and protection from the phone. It looks clean, just like new. There was no damage and never falling down or anything.
I did not do any rom upgrade or installation recently.

What can I do? Is there any calibration or testing of the screen available? I tried the found "Dial *#*#64663#*#*" but nothing happens.

 

[msssm]

I found the CIT bei pressing multiple times on the kernel version. Test "6. Touch sensor" has a lot of touches on the upper part of the screen. What can I do? The screen is absolutely clean.

 

[dannejanne]

Sounds like it could be a hardware issue with the digitizer.

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