Three Standards To Judge The Quality Of Cell Phone Screen Protector

Since the screen protector is an accessory, it hasn't called enough attention from consumers

. Thus, users are constantly deceived by sellers for their ignorance. Actually, it's not hard to judge whether a screen protector is good, just making a comprehensive preparation before purchasing in order to avoid taking advantage of the sellers. Here are the three main standards to distinguish the quality of screen protectors.

1. Light transmittance

Owing to the characteristics of light transmission, its energy reduces after going through some objects, which are related to the absorption, reflection and scattering of the medium. Limited by the technology, the highest light transmittance of optical glass reaches approximately 97%, which means that the light transmittance of screen protectors made of plastic is impossible to meet 97% or even more. So, if the seller claimed that some brand's screen protector has a light transmittance more than 95%, you should be more careful. Recently, quality screen protectors are mainly having the light transmittance between 92% and 95%, seldom above 95%.

2. Degree of wear resistance

Screen protectors are born to protect the screen in various situations and accompanied by fingers. So its wear resistance is of vital importance. However, it's not right to immediately pursue a high degree of wear resistance or hardness for the reason that the rate of occurring rainbow pattern is directly proportional to the degree of hardness in present technology. The harder, more risk of occurring rainbow patterns. Nowadays, the best degree of hardness is between 3.5H~4H.

3. Fit the screen

Simple explanation, fit to the screen is how the screen protector is fit to the screen in details. A satisfactory product could not only tightly paste on the screen, but also exactly fit to the screen in its size. Screen protector with bigger size is easy to turn up, while thinner one is hard to cover the whole screen. A little error in size is enough to ruin a whole set of screen protectors. So if possible, the consumer can ask the seller to show the model, and compare with the screen carefully before purchasing.

by: goodscool

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