New Display - Fingerprint calibration issue

Hi,

I broke the screen of my beloved Mi 10 Ultra, bought a new one from china, waited a couple of weeks, got the new display, gave it to a local repair shop to change it. Got the phone back.

I knew that the under-display fingerprint sensor must be calibrated, so I went to Settings - My Device - All specs, clicked a couple of times, got into the CIT menu, found the "fod fingerprint calibration" tool under "additional tools".

When trying to calibrate (I saw a couple of forum threads about...

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