The cell phone tempered glass screen protector with arc edge is much harder and better than PET film with straight edge. Generally speaking, the thinner, the better,0.1mm arc edge is the best. If you use a cell phone for long time, the proposed purchase of a cell phone anti-blue tempered glass screen protector.Take the iPhone for example,what are the characteristics of a pretty good iPhone screen protective screen film in the end, consider the following description.
1, anti-scratch strength: a good iPhone glass tempered glass protector can withstand the scrape by blades, scissors, keys and other hard, sharp objects. It is difficult to leave the obvious scratches on quality tempered glass screen protector.
2, smooth: touch the iPhone tempered glass screen protector with your fingers, if it is a good tempered glass protective film, there would be more delicate, smoother than the original iPhone touch screen (bare screen).
3, the size of the fit: you just take the film posted on the iPhone, if the size is perfect covered, particularly for some of the holes (photosensitive hole),there is no bubble between the screen and screen protector posted,it must be a quality screen protector.
4, anti-fingerprint, anti-oil: the better approach is: dripping water and oil to write on the screen protector, a good iPhone glass membrane is able to condense water, the dripping water does not spread up; it is very difficult to write something with a oil pen on the surface of a iPhone tempered glass protector, and it is easy to erase the ink left!
5, explosion-proof performance: it is not only a crucial an indicator evaluating the quality of the film, but a performance consumers are most concerned! A good iPhone tempered glass protective film is known as praised toughness, density, strength, which means that the glass fragmentation holds a whole mesh lines.
6, light transmission performance: the light transmittance is the easiest and most direct way! A good iPhone tempered glass screen protector with the large density, high light transmittance contribute to clear picture quality.
For more information about the tempered glass screen protector,please visit and shop at http://www.onu-mall.com/catalog/iphone-accessories/screen-protector/
Article from http://blog.onu-mall.com/index.php/2015/09/07/how-to-choose-iphone-tempered-glass-screen-protector/