What is the difference between a full screen tempered glass protector and a half screen tempered glass protector?

The tempered film that can cover the arc of the screen is called full screen tempered glass protector; Tempered glass protectors that cannot cover the arc-shaped part of the screen are called non full screen tempered glass protectors.
Because the screen is curved, the non full screen tempered glass protector can not achieve full screen coverage, so there will be a circle at the edge that can not be covered. 
What is the difference between the full screen tempered glass protectors and the half screen tempered glass protectors? The difference mainly lies in three aspects: coverage area, hand feel and degree of ash prevention.
1. Coverage area: the transparent full screen protector covers the entire mobile phone screen and fits the mobile phone completely. The transparent half screen protector only contains the hole position of the earpiece camera, and it is only an arc at the key position, which will not cover the whole key.
2. Feel: transparent full screen protector transparent half screen protector will not cover all the edges of the arc, and there will be a sense of defect when grasping.
3. Anti dust degree: the transparent full screen protector will cover the whole area around the mobile phone without gaps. The transparent half screen protector will have a gap between the protector and the screen, so it is necessary to clean the dust in time.