Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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Why won't the proximity sensor respond?

I have replaced the screen on a black iphone 4. Normally if the sensor stops working, it is because the new screen is a light colored one like pink. This one is black but since the sensor isn't responding, I bought one of those sticker pads to put over the sensor. Still not working. I used a permanent marker on the back of the screen where the light shines through. Same result. Restored the phone to 5.1 and wiped out everything. Still the same. Bought a new sensor. Still not working. Went out and bought ANOTHER screen. Same thing.

So frustrating especially since they won't update that CallLock tweak so it is compatible with ios5. Anyone able to help?

Answered! View the answer I have this problem too

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I am having the exact same issue and have tried every solution listed in your posting and still can't find a solution.. I can assume you have read this to but if you have a screen protector on your phone try removing it.

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Yea, I removed the plastic on both screens. Thought the solutions here looked promising but so far, no: https://discussions.apple.com/message/15...

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I have run into this problem several times myself as well. The only way i have found a way around it is below.

When you replace the Digitiser, there is a slight chance you may have dislodged or removed a very small plastic cover and/or a square piece of foam lining over the sensor. These two parts are crucial to the functionality of the sensor.

Below is a sensor ribbon cable WITH the correct covers

Block Image

Below is a sensor ribbon cable WITHOUT the correct covers

Block Image

If you don't have your original flex to take the covers off of, then you have pretty much no hope of getting it working again. The only way around this is to replace the entire iPhone through Apple.

If your iPhone is still under warranty then it will be FREE.

If your iPhone is not under warranty then there will be a cost of about $260 for an entire unit replacement.

Hope this helps!

Martin

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Hi

I'am iPhone Repair Technician 1 year experience, repair daylig between 2-6 iPhone's.

Here a solution that works, you can use electrical BLACK tape, it must be black color, cut 2 pieces and put them together, then cut 2 very small holes, place it above the proximity sensor.

You can watch this video tutorial about the electrical BLACK tape:

http://www.youtube.com/watch?v=EX9oMrHb1...

2nd Solution watch this video:

http://www.youtube.com/watch?v=pTVPrxkNW...

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Abraham Yosief will be eternally grateful.
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