Tempered glass or hydrogel film — what is the difference?

Tempered glass (9H hardness) protects against drops and scratches and feels like the real screen under your finger. Hydrogel film is thinner and flexible, sits properly on a curved screen and heals surface scratches by itself — but it does not absorb impact. For most phones we recommend tempered glass.

Does a screen protector make the display worse?

No. A good protector has over 99% light transmission and an oleophobic coating that repels fingerprints. Colours and brightness stay the same.

Will a protector interfere with the fingerprint reader?

Tempered glass can slow down an in-display reader slightly. Hydrogel film works better with that technology. Tip: re-register your fingerprints after fitting the protector.

How often should a screen protector be replaced?

Replace it as soon as you see cracks or deep scratches — a cracked protector no longer protects properly. A good one typically lasts 6–12 months.

Crong 3D Armour Glass 9H full-screen tempered-glass...

Description

Crong 3D Armour Glass is a 9H tempered-glass screen protector shaped specifically for the curved display area of Huawei P40 Pro. Its full-screen form follows the rounded edges, while the smooth oleophobic surface is intended to reduce visible fingerprints and preserve responsive finger movement. The supplier states a thickness of 0.33 mm and light transmission of up to 92%.

A dedicated installation frame is included to help align the glass. Clean and dry the display carefully, remove every dust particle and check the orientation before lowering the protector; trapped dust or repeated lifting can weaken adhesion. The supplier lists compatibility with protective cases and the fingerprint reader where available, but a close-fitting case can still press against an edge and biometric response can vary. Tempered glass helps take everyday scratches and minor impacts, but it cannot guarantee that the protector or phone display will not crack.

Compatibility: Huawei P40 Pro
Material and rating: 9H tempered glass; supplier-stated thickness 0.33 mm and light transmission up to 92%
Surface and fit: oleophobic finish, curved full-screen shape and case-compatible design
Included: 1 Crong 3D Armour Glass protector and dedicated installation frame

Technical Specifications

Glass type

Tempered glass

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Crong 3D Armour Glass 9H full-screen tempered-glass protector for Huawei P40 Pro with installation frame

Material

Protection

Quality

Perfect Fit

Compatible devices

Description

Technical Specifications

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