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Quality Control System

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QUALITY STANDARD

Quality-Guarantee

Original Self-welded
Original self-welded parts are those with 100% original core components like LCD, IC chip, while non-core components like flex, glass lens and frame made of best original compliant material, which are assembled by the capable third-party factories.

High Copy AAA/AA
High copy AAA/AA stands for China made quality, with all components made of original compliant materials. They are widely accepted compliant replacements for original parts, which can keep a good balance between price and quality.


Original
Original parts are those with 100% original core components like LCD, IC chip, flex, while non-core component like frame can be original or original compliant (up to the main market trend), which are assembled by the original factories.


ORDER FULFILLMENT PROCESS

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HOW WE TEST

Quality Guaranteed through Our Industry-leading QC Standard.
3 Steps Make Sure You Get the Quality Products. 

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Qualified Standard:
1. No scratches or damages.
2. No missing parts, such as: screws, adhesives.

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Tools Needed:
1. LCD and Touch Screen Tester.
2. Build-in test application (for Android phones only). 

Qualified Standard:   
1. Tester Test Standard: Less than or equal to 2 dead pixels
(pixel diameter is less than 0.15mm).   

2. Application Test Standard: The software indicate as passed.

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Tools Needed:
1. LCD and Touch Screen Tester.
2. Build-in test application (for Android phones only).

Qualified Standard:
1. Tester Test Standard: Diagonally draw straight lines on the screen,
    the lines appear without any malposition, breakage or bend.
2. Application Test Standard: The software indicate as passed.

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Tools Needed:
1. Multimeter.
2. DC Power Supply.
3. Probe Leads.

Qualified Standard:
1. Voltage Standard: 3.7V.
2. Normal Charging Standard: The multimeter will indicate the
    electricity value.
3. Normal Discharge: Power on normally after assembly.

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Tools Needed:
1. Relevant OEM Test Modules.
2. Other related devices. Such as: earpiece is required on audio flex
    test, data cable and charger are required on charging port test,
    multimeter is required on tests of loud speaker, ear speaker and
    vibrating motor and so on.

Qualified Standard:
1. Module Test Standard: Function as normal.
2. Multimeter Test Standard: Loud speaker ohmic resistance reaches
    6~10 ohmic; ear speaker ohmic resistance reaches 27~32 ohmic;
    vibrating motor vibrates or rotates after being supplied with1.5~4.2V
    DC electricity.

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Tools Needed:  
1. Screwdriver.
2. Tweezers.
3. Other related devices, like: RF Test Equipment, NFC Test Device.  

Qualified Standard:   
1. Work normally on OEM Test Modules.   
2. No cosmetic or functional incompatibility on OEM Test Modules.

INSPECTION CRITERIA EXAMPLE

1

No bubbles or separation issues.
No gap between digitizer frame and digitizer.
Specialized assembly procedures ensure no defects.

Clean parts with no smudges, finger prints, or scratches on display area. 

No white/yellow/dark spots or lines on the display.
Less than 1 dead pixel (red, blue, green, dark grey or black) within
0.15mm, and less than 1 foreign object within 1.0mm x 0.05mm, and
it isn’t visible while the power is on.
LCD functioning with no dead spots or color bleed.

 

Double sided adhesive.

Frame bezel and bezel clips
assembled correctly, not bent or corroded.

2

Screw holes not blocked or deformed.

No cosmetic defects on LCD
backlight and functions properly. 

Protective film on backlight attached
correctly, should not be too sticky to pull up the backlight.

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Foam pad on connector not damaged or misaligned.

With anti-static adhesive.

No deformation, damages, cracks or scratches on LCD flex and digitizer flex.

With double sided adhesive.

4

Proximity sensor bezel attached firmly, not misaligned.

With ambient light sensor window and diffuser.

Front camera lens bezel attached firmly, not misaligned.

Ear speaker rubber grommet not damaged.

LCD fasten screw holes not blocked or deformed.

Home button fasten screw holes not blocked or deformed.

5

LCD back plate fasten screw hole not blocked or deformed.


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