If you have difficulty finding the fingerprint sensor on your Samsung Galaxy S10 display or operating it with light pressure, removing the pre-applied film from the manufacturer might be the solution.
We recall, in fact that the Korean manufacturer has decided to factory-apply a film to protect the display, so as to ensure the correct functioning of the sensor for the recognition of fingerprints and to prevent users from using one of the many third-party glass alternatives.
Well, if the fingerprint recognition sensor works well with the official Samsung film, it seems that it works even better without it.
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The Samsung Galaxy S10 ultrasonic fingerprint reader seems to have trouble working with a light touch of the finger when there is a screen protector installed while it would have no problem with strong pressure. Probably with a tempered glass protection the problem is destined to become even more serious.
Removing the pre-applied film from Samsung would make the scanner for fingerprints more sensitive but at the same time it would expose the glass to the risk of getting scratched.
Perhaps it is more convenient to exert stronger pressure on the display to allow the scanner to read the fingerprint.