Samsung s20 3d curved cover uv tempered glass screen film

How to identify a good tempered glass protective film:
1. Poorly exhausted air bubbles on the surface of the mobile phone;
2. The four peripheral corners of the toughened glass can’t stick to each other, and there is bubble phenomenon;
3. The toughened glass cannot stick to the mobile phone, and it 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 pasted on the toughened glass is too thick, which affects the light transmittance of the mobile phone display;
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 than the hypotenuse, which is not easy to hurt your hands.
8. The water drop angle is less than 110 degrees.