Proximity Sensor not working on White iPhone 4

As this is within my 14 days return period, I returned the 2nd one and bought my 3rd White iPhone 4. Still the same with or without screen protector.

we bought 2 iphone 4 white's from verizon and both of them had the same problem so i remove the screen protector that the lady at verizon put on and it Worked!!! try that if it doesnt work then get a droid

I am having the same issues with the sensor as well, I am guessing. It just started today. I have a white iphone 4 with a bumper and NO screen protector. While talking on the phone it just randomly turns on speakerphone and will start 3 way dialing someone in my contacts. I would turn the speakerphone off and a couple seconds later it would turn it back on. It has happened on multiple different calls today. VERY disappointing because this is my second iphone 4 since May. The issue with my old phone is that i could not connect to my wifi at home and when they tried to restore it at the apple store it gave them a hardware error so they gave me a new phone.

I NEVER had any major issues with my Iphone 3 and i regret upgrading to the 4. This is idiculous if I have to take it back to apple and they have to exchange it again!!

You will survive.

I had the same issue. The screen on my phone would not go to black during a phone call causing all sorts of issues (muting, punching random numbers, going to speaker, etc..) On the few times it would go to black, then it would not return my screen back to me at the end of the call. I would have to turn the phone off and then back on again before I could see my main screen.

It seemed like it was gradually getting worse until one day it finally stopped turning off altogether.

I have an Otter Box so I decided to clean the sensor hole at the top of the case, both sides of it, and lo and behold, it completely fixed my problem! Hope that may help someone else suffering through that frustration.

Found some Youtube videos regarding the proximity sensor on the white iphone 4.

It seems the best way is to remove the screen protector, without having to reset my iphone.

http://www.youtube.com/watch?v=ZhNd5kntWyYhttp://www.google.co.uk/url?sa=t&source=web&cd=4&sqi=2&ved=0CDYQtwIwAw&url=http% 3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DZhNd5kntWyY&ei=bgiSTpzdGsyOswaemYX1Dw&usg= AFQjCNG56N6xHQUsO05p0aqFtr5OGobA6A

Had a look around into the screen protectors on the net and found ones selling on Amazon United Kingdom site with the proximity sensor cut-out.The protectors are front and back, not anti-glare but okay quality, 3 sets in a pack so it was very good for the price so tried it and it works fine.. Unfortunately it is not available in the US.

http://www.amazon.co.uk/Protector-Microfibre-cleaning-proximity-friendly/dp/B004 2QX3FM/ref=sr_1_1?s=electronics&ie=UTF8&qid=1318193455&sr=1-1

A lot of people uses the screen protector reason. All the white iphone 4 I've tested, DO NOT HAVE SCREEN PROTECTOR OR IN ANY CASE.

All have proximity sensor problem when using speakers to initial call and switching back to the phone.

Surprisingly, only white iPhone 4 are affected whether with screen protector or not. If you don't believe me, try it.

Hi...this didn't happen to my phone until I upgraded to IOS 5...I noticed my prox sensor works fine until I start using the speaker...then it doesn't work at all...the only way to get it back to work is to powerdown and restart the phone...I think it's a software bug...Apple, please look into it...

It worked on mine, I cut out a hole for the sensor bar and bravo, one down and one to go . . . . . Now for the dropped call issue, then I'll be fine. Thanks for the helpful hints.

chances you're using a case, colour in a spot on the inside of the case where the proxy sensor is (iPhone 4/4s above receeiver, iPhone 3g/3gs to the left of receiver) Just use a black sharpie and it'll fix the sensor. P.S it's not just the white iPhones, it's simply something the manufacturer of the cases didn't think of.

White iphone 4s with an older powersupport HD anit-glare without the sensor cutout and my proximity sensor works perfect.

My Genius Solved it!! Craig at Apple Eastview figured out that there is a temporary hesitation (on both black & white phones) when taken off speakerphone, before the sensor is active again. So you need to give it a second before you put it back up to your ear... then it works fine. I tried it a dozen times, and it's consistent.

There definitely seems to be confusion as to what this problem and solution is. I think I have the answer. There are multiple issues that cause this. I just tested a few out on my white iPhone 4 and determined that the main culprit seems to be the speaker phone issue, as others in this thread described. However the issue also seems to be related to the Otter Box as well. As far as I can determine it is due to the case surface being raised a bit from the phone surface at the proximity sensor which does not trigger the sensor. My Speck case prior to this had. I issues since there was nothing covering the front of the phone. Many of you seem to be correct for different reasons.

I have found a fix for my white phone and my OtterBox. I peeled the plastic covering from the area with the proximity sensor. Seems to have fixed the problem. I hope that helps someone else!

I did the same thing and was getting ready to post how to fix it when I finally went to the this page and saw you had already posted the fix. I peeled the clear plastic off and then just trimmed the area around the sensor off and then put the plastic back on the case and it works fine also. Just wanted to let everyone with an otterbox case this definitely does work