Professional guide: Teach you to test LCD screen full steps - VIP Pro Shop Team

When you recycle or refurbish an iPhone cracked LCD screen, you need to check whether iPhone LCD display is good or bad. But how do you test a broken LCD screen? Many friends think the LCD is good, but when they sell the iPhone cracked screen in the market, the professional people may tell them that the LCD screen has many defects. It means a loss. So, we need to know how to test an iPhone LCD well.
Now, VIP Pro Shop Team will share you our experience of how to use an iPhone to test a LCD screen. These steps are for Apple iPhone LCD.



Inspection Test  the iPhone LCD Screen Cosmetic and Repair Solution:


1. Check whether the surface of glass lens damaged or off paint, etc.



2. Check whether the front bezel debonding, damaged, screw hole blocked,etc.



3. Check whether the flex cable broken or damaged.



4. Check backlight adhesion normal or not.



5. Check hydrophobic effect with water, alcohol, and N-hexane.


  • Function & Display


1. Test touch function by pulling up and down, switching page, moving icons.



2. Test 3D Touch function and sensitivity.



3. Check pure color screen normal or not.



4. Check whether the screen turns black under polarizer.



5. Screen Test Color Coordinates & Brightness with Color Analyzer CA310.



  • Structure Test: Measure thickness, width and length:

1. Check whether LCD metal plate well matched or screw hole well aligned.



2. Check screen fitness with iPhone housing after installation.



3. Check whether function normal or not after installation.



4. Check whether light leaked or backlight conflicted with LCD.



5. Run Touch ID function test.



Tips: For more details on iPhone Frozen Screen Repair guide, you can order automatic at www.vipprogrammer.com. Hoping you can benefit form it, all of these phone repair tools, and you can find it.


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