Comprehensive Testing Approach

Cosmetic Test

The flex cable must be complete, cannot be deformed, creases, missing corners, etc.

No bubbles, paint, scratches, missing corners and bracket wear in the LCD display.




Camera ring must be a complete blue round hole. The light-sensing hole must have a normal light transmission. Sensor rings are 2 elliptical split holes.

 

Camera ring, sensor ring, ear mesh must be complete (well-assembled, no distortion, no deviation).

The LCD frame should not have any gaps or should not be loose. the screw hole must be complete with normal thread (no broken hole, no block hole)





The flex cable must be complete, cannot be deformed, creases, missing corners, etc.

The backlight should not have any gaps or should not be loose.

 

Hydrophobic Effect Test

The liquid drop has to be stable and round, leaves no residue

General Configuration

  • Flex cables have to be clean and complete, no badly insulated, blank contacts, unprofessional soldering.
  • Subcomponents are well-assembled.
  • No loose frame nor sharp edges.
  • No Residual glue between frame and display
 

Function Test

In-Circuit Test

Testing Method: visual inspection, film card inspection, test fixture

a.Power on/off should be normal.

b.LCD picture quality should be good, LCD has no color difference to original display.

c.Illumination uniformity should be good

d.No dot defect, line defect, no visible pixel failure.

Touch Function Test

3D Touch Function Test

Installation Test

Stability Test

Shake the Installed LCD, the screen should be working normally:

  • Buffer-free
  • No blank screen
  • No static lines
 

Screen Fitness Test

Fingerprint Recognition Test

Other Tests

Assemble small parts for installation test

The light sensor and proximity sensor work normally

Home button hole is:

  • in correct position
  • perfect round shaped
  • well fitted
 
 

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