For HD glass tempered film, please check our description and installation video, after installation, Please remove the old fingerprints, and re-enter the new fingerprint, so that you can perfectly identify the fingerprint.
Regarding the circle of the tempered film fingerprint area, the glass tempered film applicable to Samsung requires this circle area to adhere tightly to the screen in order to support fingerprint recognition. Please install the tempered film correctly, Please remove the old fingerprints, and then re-enter the fingerprint. Our glass tempered film is currently an excellent solution to fingerprint recognition. In order to better protect the mobile phone screen, the tempered film has a certain thickness, so it needs to be stably glued to the mobile phone screen through the back glue in the fingerprint recognition area. Please confirm that this plan is acceptable before purchase.