Released on September 19, 2014, this 4.7" screen iPhone is the smaller version of the iPhone 6 Plus.

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Backlight goes dim when typing

Hi I have recently changed the LCD screen on a iPhone 6 exactly the same as I have done in the past .

The problem I am having is that sometimes when touching the screen or typing a message etc the screen goes very dim and then comes back brighter when not touching the screen .

I have checked all connectors and everything looks fine and the phone has been fine for 2 weeks and has just started doing this .

Could it be a faulty LCD but I would have thought it would do it all the time not just when pressing on the screen .

Any help much appreciated

Update (11/09/2016)

I purchased the screen with the proximity sensor , camera, home button etc and everything looks fine . It has worked fine fir about 2 weeks but the screen goes dim just when typing or pressing on the screen . Other than that the phone works fine .

I wish I still had the old screen to try but I have thrown it away as that one never did that but at least it would prove it was the screen and I can send it back

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Very good question, I have this problem and need to sell the phone. Now someone post the solution. I wish I've found it earlier.

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Respuesta Más Útil

Try to replace the diode, it is a common issue:

iPhone 6 Damaged Diode - Backlight issue Replacement

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I have replaced the diode but problem persist, what are the next steps?

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You need to check the u2 chip then.

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I you replace the diode and nothing happened go for U2 chip as has been mentioned.

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Try replacing proximity cable, maybe somewhere is scratched or broken. Good luck!

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Try to replace the display.

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Diode replacement fixed the issue. No need to make extra pay fro new display.

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Shaun estará eternamente agradecido.
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