How to identify a good tempered screen protector

The toughened film is to prevent the screen from breaking when the phone falls. Not for scratch prevention. Ordinary films have a hardness of 3H. After a few months of use, there will not be too many scratches. The reason for choosing a toughened screen is that it has high hardness and low toughness. If the phone is dropped, it can be a good shatterproof screen. When the mobile phone falls on the ground, the impact force is great, and the screen is broken if the tension is too large. The toughness of the toughened film is low. When the mobile phone transmits tension, the film will bear tension, which greatly reduces the tension on the main screen.


How to identify a good tempered screen protector:

1. Poorly exhausted residual bubbles on the surface of the phone;

2. The four peripheral corners of the toughened glass can't stick and bubble phenomenon;

3. The toughened glass cannot stick to the mobile phone and is easy to fall off;

4. The toughened glass is too thick, which affects the light transmittance and thickens the thickness of the phone;

5. The glue on the tempered glass is too thick, which will affect the light transmittance of the mobile phone;

6. After the tempered glass is pasted on the phone, there is a watermark on the surface of the phone.

7. The tempered glass film is also divided into straight edges and arc edges. The arc edges are more rounded compared to the hypotenuse, which is not easy to hurt your hands.

8. The water drop angle is less than 110 degrees.



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