The full face tempered glass is a full-coverage tempered glass, specially made to protect your mobile phone screen from scratches and other damage.
It does not affect the functionality of the screen and features adhesive across its entire surface, unlike edge glue glass protectors that have adhesive only around the perimeter. This design helps it fit better and ensures trouble-free operation of the touchscreen.
In addition, it does not allow dust to pass underneath, something that can happen with edge glue protectors when the adhesive around the perimeter wears out.