One of the best things about flagship Samsung Galaxy phones is the quality of the AMOLED displays the company uses year in year out.

This year’s Dynamic AMOLED panel is no exception, but as usual, Samsung takes things a notch higher, this time including a cutout to house the front camera as well as an under-display fingerprint scanner on the premium Galaxy S10 and S10+.

Both elements have been subject to debate lately, but it is the latter that is gaining more traction thanks to a video published by YouTuber JerryRigEverything, who took the phone through his usual durability tests.

After it emerged that optical in-display fingerprint scanners could still work even after another YouTuber, MKBHD, roughed up the contact area, a related test on the Galaxy S10 failed terribly, suggesting that ultra-sonic fingerprint scanners are likely to defect if the screen cracks.

To be fair, the Galaxy S10 did well in the test. The ultra-sonic sensor still works fine with scratches on the screen and we also know it works fine even with a wet finger. However, when the contact area is cracked, the sensor won’t work, which isn’t unexpected BTW.

You can’t go around cracking your phone’s display screen thinking it will work perfectly. That’s a big NO, mate, even for these $1000 phones!

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You can watch the entire video below.