The in-display fingerprint scanner on the Vivo X20 Plus UD won't work with certain screen protectors16
If you plan on purchasing the Vivo X20 Plus UD when it hits the Chinese marketplace on February 1st, there is something that Vivo says you should know. Screen protectors exceeding a certain thickness will prevent the in-display fingerprint scanner from working correctly. In order to make sure that users don't have any issues with the biometric reader, the phone is going to come with a screen protector that is thin enough to protect the display, and still allow you to unlock the device by pressing the fingerprint icon on the unit's screen.
Since a scratch on the display in the wrong place could prevent the fingerprint scanner from working, you are going to want to use the screen protector that comes out of the box with the phone. And if you need to replace it, Vivo will sell you screen protectors that are compatible with the in-display fingerprint scanner. Buying any brand of screen protectors off the rack could prevent you from quickly unlocking the phone and verifying your identity with a tap on the glass..