Black sensor cover for Huawei Watch GT 4 46mm PNX-B19

Black sensor cover for Huawei Watch GT 4 46mm PNX-B19

Black sensor cover for Huawei Watch GT 4 46mm PNX-B19, also associated with Phoinix-B19F versions, designed to replace the rear cover of the watch sensor area. This replacement part restores the external protection of the optical module, the correct aesthetic finish of the lower section and proper wrist contact. It is intended for repairs where the original cover has breakage, scratches, wear, detachment or sealing deterioration. It does not include electronics or internal sensors, so the functional smartwatch assembly must be reused when applicable. Replacement part recommended for professional installation, always checking fitment, contact area cleaning and adhesive condition before closing.

Specifications

Rear sensor cover in black for Huawei Watch GT 4 46mm. Compatible with technical model PNX-B19 and Phoinix-B19F commercial versions associated with the black finish. Part intended to cover and protect the lower area of the smartwatch, maintaining functional access for the optical measurement system and correct skin contact position. Suitable for aesthetic or functional repairs of the lower cover, especially when the original part is damaged or does not allow uniform closure.

The sensor cover restores the external appearance of the watch and helps maintain a clean and stable contact surface during daily use. Its fitting must be carried out precisely to avoid interfering with optical sensor readings or the wireless charging area. It is a particularly useful part for workshops repairing Huawei wearables and needing a specific replacement for the 46mm Huawei Watch GT 4. Before final assembly, it is recommended to check alignment, remove old adhesive residue and verify that the watch maintains heart rate reading, SpO2 reading and correct charging after installation.

Installation tips

Disconnect the device and work with ESD protection.

Remove the damaged cover using controlled heat and plastic tools.

Completely clean adhesive residue before fitting the new cover.

Do not press directly on the optical sensor window.

Check wireless charging before final closure.

Verify heart rate reading, SpO2 reading and correct wrist contact.

Apply uniform pressure during sealing to improve fixation.

Technical table