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Proximity light problems with new installs

Hi, ive done some front screen repairs for my family and so far a 5s, 5c and 4 all have had proximity issues. As you "live on learn" with these kind of things ive only just noticed that ive not been transferring the camera plastic and the little square cubes from broken to new.

Is this likely to be the issues? If so how do i get the little plastic bits out and put into new?

Thanks guys

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Issues with proximity sensors after screen replacements are a long standing issue. The iPhone 4 was by far the worst culprit, and the iPhone 4S sometimes had issues too. Just like con, I have had very few issues with 5, 5C, or 5S replacements, but I have had issues a couple of times. Usually it is a problem with the cable that isn't immediately evident, but one time it was another issue.

The exact cause of proximity sensor issues with the iPhone 4 is a hotly debated one, and you'll find a really long thread on here about it. Everybody as their little tricks that they are sure solves the problem every time. In the end though, it seems that the origin of the problem with the iPhone 4 was the fact that the window for the sensor on the replacement glass was not exactly the same as on the original glass, which caused too much light to reach the sensor. The only fix for that that I have personally found to work every time, is to put a layer of black Sharpie marker ink over the proximity sensor itself, effectively reducing the amount of light that reaches the sensor.

So when I recently had an issue with a 5C proximity sensor and a replacement cable did not help, I altered that method slightly for the 5C and put a layer of ink over the window on the glass for the sensor. This fixed the problem for me.

Also, I would suggest that you transfer the bracket for the proximity sensor...the one for the camera and the "little square cubes" you reference in your original question. This ensures that both the camera an the proximity sensor remain in the right place. This can be especially important for the proximity sensor. I know a lot of people don't transfer these brackets, but my philosophy with repairs has always been that if it came with the phone, it should probably be transferred. Especially if it's something that's easy to transfer like those brackets...just pry them off the old glass, and glue them in with a very small amount of super glue. Just be sure to let the glue dry completely before putting the sensors in...otherwise there could be a haze that forms over the windows on the inside of the glass.

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Great reply, thanks IGuys. I will give these fixes a go and report back :) Thanks again

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Installed plastic camera hold and sensor hold and woolah, proximity sensor now working! Many thanks iGuys!

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Great! Glad to hear.

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Installed countless of iPhone 5/5s without the little square filter only because it wasent there but never the less I have never had a proximty problem ever with any 5/5s..

You can try the little square but I don't think this will help you you must be damaging the proximty when removing

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Hmm maybe your right. Ok so to clarify, when im removing the front camera from the screen i remove the flex with 4 pins (gently) with a spludger. Is this where the issue is as i cant think of anything else ive done to damage as always extra sensitive when rmoving parts from the cracked screen

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The issue of the proximity sensor not working properly with a new 5S or 5C screen is the single biggest headache for me at my shop right now. This issue first cropped up for me in August. Prior to that I had no issues with the proximity sensor not working with replacement screens on the 5S and 5C. And yes, I'm positive that there were not issues prior to that because it is one of the functions I check before and after every single repair. I was using Apple N' Berry as a supplier for 5S and 5C screens so I switched to Wholesale Gadget Parts. Initially, this was effective and the problem went away, but it has since resurfaced. Here's what my countless tests have concluded:

I only see the problem on black 5S and 5C screens, not on white 5S screens.

Sometimes a pre-installed frame or hold (as it's called on the eTech Parts site) is the problem because it's position is off or because it's slightly too small. If it's too small and the proximity sensor isn't sitting extremely close or making contact with the screen, that can cause it not to work. Sometimes you can remove the frame other times you can't because there's too much glue under it. You also have to be careful when you remove it because it's easy to scratch the black paint off.

The proximity sensor will work with out it's frame or "hold" in an original Apple screen and in some replacement screens. Regardless, I always use one UNLESS there was one on the replacement screen that I remove and there too much glue from the frame I removed. So, I have go without the frame in an effort to make sure that the proximity sensor sits touching the screen. In cases like this, as long as the filter in front of the proximity sensor is causing the problem, not having the frame does not cause the proximity sensor to not work.

The rubber frame for the light sensor being in place properly, does not solve the proximity sensor issue.

The little white square light filter that sits under the light sensor should probably be moved from the original screen to the replacement screen. I always move it so I can discount it as a possible issue with affecting the proximity sensor. Does it really matter? I think it probably doesn't from my tests.

I've tried coloring the purple filter for the proximity sensor with a sharpie. I've tried scratching a tiny pin hole hole off. I've tried scratching all the purple off. I've tried coloring with sharpie after scratching a pin hole hole or scratching all the purple off. None of these worked for me.

Very often when you test, if you leave the temporary screen protector that came with the new part in place, the proximity sensor will work fine. If you cover it with your finger without the screen protector in place, it will work fine but when you put the phone up to your ear with out the screen protector in place it does not work or it does not work 100% of the time. This makes me think too much light is getting in to the sensor and causing it to not work properly. This then leads me to try coloring in the purple filter on the screen which as I said above, has yet to work for me.

The only thing that works for me is to pre-test every single screen with an original proximity sensor part and send back any screens that don't work before I get to trying to use it for a repair. This is horribly time consuming and I just can't always do it.

Both of my these suppliers have basically told me I'm the only person in the world who has this problem. I've complained more than once to each of them and they have told me that no one else has reported the issue. People either aren't testing, aren't complaining, are living with it, or the suppliers are lying. This is really frustrating.

I don't think the suppliers are going to correct this issue so it's up to us to find a work around that works 100% of the time. I hope one of us finds one soon.

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Wes さん、ありがとうございました!
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