An example of perfectly applied glass protector on Samsung curved screens.
Between red and green, there is about 2 mm gap on all sides (especially on curved sides), which is further occupied by the phone case.
If there is no such gap on all sides, the case will keep touching the protector edges repeatedly and eventually protector will come off.
This simple thing is so underrated that majority of people have to replace glasses protectors multiple times, wasting a lot of money and time.
