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Repair information, troubleshooting tips, and guides for the sixth iteration of Apple iPhone, announced on September 12, 2012. Model: A1428, A1429

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Yellow spot on iPhone screen after screen replacement

Im Running repair store which repairs iPad, iPhones and so on.

After replacing lcd I have noticed that about 10% of the screen has a yellow spot on it. All i do is wait couple of days and spots will disappear.

What causes this issue? Is it some clue or what it is.

Thanks for you reply.

Answer this question I have this problem too

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And its not about the quality. I 've faced this issue on 5 different suplier lcds

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Pressure from the backplate don't screw the screws down so tight especially the one beside proximity and home button

update

Isn't there a screw at the top beside the ear piece that holds the frame down

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Post a picture of the yellow stain and we can diagnose it better

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6 Comments:

Those are pre-assembled so I dont need to do that. I need only loosen three connector cover screws and plug new screen in..

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Happy days mate glad you got it sorted never would have thought it would have been that.

That's another tip saved in the memory bank lol

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I am experiencing this issue after replacing my broken screen. Do i need to disassemble the phone again or does it go away after a while?

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Well whoever pre assembled it screwed them to tight

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There are only two screws that hold the screen down (the pentalobe at the bottom). How will it affect the pressure on the top half of the screen?

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Ya it's the screen connector shield that does it. Take it off and reseat it till til goes away. At least that's what causes it on the 5.

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These are my findings why yellowish spots on iphone LCD screens appear.

1-Due to some particles/material between Backlight film and metal back plate /sheild.

2-Bent in the Metal plate/Sheild.

3-Tightening the screws too much near home button, or speakers.

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This is the bug of wrongdoer that can read all info on display and control the touchscreen on Devices . This technology use the governments structures . See info about TEMPEST attacks

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Henri Rautio will be eternally grateful.
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