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Replaced an iPhone 6 screen for a customer yesterday. Called back with complaints of the screen going fuzzy and grey. Pushing power button then home Key to “wake up” resolves this. I assumed a faulty display, and installed a new one. Again, they call back with this complaint! I’m lost, any suggestions?
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Normally, this would sound like a defective replacement screen however you have already tried a new one. Can you test the first replacement screen on another, known-good device to rule out a screen issue?
I would also inspect the connectors for any debris that might impede a good electrical connection. If you could post a picture (edit your original question) of what this looks like, we might have other ideas.
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