Issue with Proximity Sensor during calls - Continued.

This thread is a continuation of Issue with Proximity Sensor during calls which was getting too long and causing some browsers to time out. The old thread has been locked and the last post links to this thread.

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Posted on Jul 14, 2010 6:16 AM

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1,684 replies

Jul 15, 2010 2:00 PM in response to Nubz N.

I've had my iPhone for a few days now, and i've only made a hand full of calls, but during all of them i have had problems with the proximity sensor! I got a case for the antenna issues and that helps with signal, but i shouldn't need to find fixes for a new phone! I would like to address my issues with the antenna as well. In the 3G and 3GS you had to get used to holding the phone at the bottom instead of the top or you would loose calls, and now that you are used to holding the bottom, that is what kills the signal on the new one... your changing things up way too late in the game. As for the proximity sensor, just do a software update to make it less sensitive, and focus on large amounts of your face touching the screen, that would fix the problem. It needs to be fixed. Also, i like that the proximity sensor is no longer visible, but there should have been a picture in the box showing you where it is so you don't cover it with a case or something... Also, why no sim removal tool? Some of us own more than one phone, and with a micro sim adapter we can still use our other phones. I am very disappointed in the new iPhone 4 and wish i would have kept my 3GS. If the next firmware update doesn't fix the proximity sensor issue i will be returning my iPhone.

Jul 15, 2010 2:03 PM in response to Nubz N.

I am thinking of ordering an iPhone 4 for my wife but am worried about the antenna and proximity problems. I have an idea for a single fix for both problems, but I need someone to test if for me before I order a phone as I don't have one to test it on.

Can someone please hold their phone in their left hand with with a finger covering the gap in the antenna in the bottom left corner (hereby creating the loss of signal). Now remove that finger from the gap and place it onto the front of the phone directly over the ear piece (over the proximity sensor). Now hold the phone up against your face. If this successfully solves both problems, I'll happily email it to Steve so he can update his instructions on how to hold the phone during tomorrows press conference.

Thanks for the assistance from any volunteer(s). While I'm waiting for an answer I think I'll make a call on my HTC Touch Pro where I can mute, hold, or conference call with my face even without a proximity sensor.

Jul 15, 2010 2:10 PM in response to Nubz N.

I tested the proximity sensor the same way I did originally (reference original proximity discussion Apple locked). Basically, it acts the same. The display cuts off the same and has the same memory effect.

I made a few test calls and placed myself on speaker phone twice. I could watch in the mirror and see the display turing on and off. I placed the phone on my ear and just slid up and down and forwards and backwards. I never removed it from my ear. The display was constantly turing on and off. The phone never lost contact with my ear. I place the phone on a stationary part of my ear. I left the top part half (where the speaker, sensor, etc are) in the same position. I just moved the bottom part up and down a little. The display would turn on and off.

I tried to do general movements like I would during a normal phone call. It acts exactly the same.

I was sure hoping that this would address this issue.

Jul 15, 2010 2:58 PM in response to TrentP

TrentP wrote:
I tested the proximity sensor the same way I did originally (reference original proximity discussion Apple locked). Basically, it acts the same. The display cuts off the same and has the same memory effect.

I made a few test calls and placed myself on speaker phone twice. I could watch in the mirror and see the display turing on and off. I placed the phone on my ear and just slid up and down and forwards and backwards. I never removed it from my ear. The display was constantly turing on and off. The phone never lost contact with my ear. I place the phone on a stationary part of my ear. I left the top part half (where the speaker, sensor, etc are) in the same position. I just moved the bottom part up and down a little. The display would turn on and off.

I tried to do general movements like I would during a normal phone call. It acts exactly the same.

I was sure hoping that this would address this issue.



Hey TRENTP remember you posted those links with the letter they even deleted all those posts and reply to those posts this is what apple been doing too fix the proximity problem the only fix they have for proximity problem till now is IGNORE THE PROBLEM 🙂 APPLE let's see what you have to say tomorrow to the world and now even new york senator wrote a letter to apple :)) APPLE You better clean your mess here.

Jul 15, 2010 3:52 PM in response to Nubz N.

Hi all, don't know if this helps...
I received my iPhone via Fedex the day before the official release, and IMMEDIATELY noticed the proximity sensor issue. After a few days of trying to make due, I finally called Apple and was instructed to do the Settings Reset. The issue did SLIGHTLY improve, for a few days, but ultimately did return. Yesterday, I finally stopped by my local Apple Store and told the Genius about the problem. Before I finished describing the problem, he told me to hang on... and reappeared with a brand new handset. He didn't even examine the old phone. Not sure if this is a sign of things to come.

Jul 15, 2010 4:38 PM in response to avanpelt

I was told and have done a return of a replaced iPhone even though it was purchased at an AT&T store. The AT&T store manager told me that as long as I had the return receipt from Apple showing the replacement that it would not be a problem. YRMV so you might want to verify this with the manager of your local store. BTW even though I returned the two iPhones I purchased, I ended buying two more as a week without the iPhone 4 proved too much for me to handle.

Jul 15, 2010 5:17 PM in response to Nubz N.

Also having the proximity issue. Since getting my iPhone on the 13th, have not been able to complete a single call without muting the caller, activating the keypad and even dialing other calls. I tried resetting the network, rebooting and even resetting all... to no avail. Not happy, not happy at all. Only saving grace is that I got this one in the mail and did not wait 7 hours in line like I did for the last one.

Jul 15, 2010 5:34 PM in response to Nubz N.

So Apple when are we really getting a phone which works I heard some people saying there is some glue issue which kinda blocks the proximity sensor hmm So if someone opens that GORILLA Glass and maybe try to work something out that be interesting sorry I am not good with hardware 😟 or i would have looked into it any how thank you for all those wonderful advice APPLE YOU BETTER FIX THE PROXIMITY SENSOR ISSUE

Jul 15, 2010 6:28 PM in response to SO_GTI

SO_GTI wrote:
I am thinking of ordering an iPhone 4 for my wife but am worried about the antenna and proximity problems. I have an idea for a single fix for both problems, but I need someone to test if for me before I order a phone as I don't have one to test it on.

Can someone please hold their phone in their left hand with with a finger covering the gap in the antenna in the bottom left corner (hereby creating the loss of signal). Now remove that finger from the gap and place it onto the front of the phone directly over the ear piece (over the proximity sensor). Now hold the phone up against your face. If this successfully solves both problems, I'll happily email it to Steve so he can update his instructions on how to hold the phone during tomorrows press conference.


Thanks for the assistance from any volunteer(s). While I'm waiting for an answer I think I'll make a call on my HTC Touch Pro where I can mute, hold, or conference call with my face even without a proximity sensor.


HTC Touch Pro? Windows? LOL you have bigger problems than a sensor. Congrats for being able to use a phone for 10 years. No job I take it?

Jul 15, 2010 6:29 PM in response to TrentP

I wonder if the memory effect is in the hardware? Is there any way to find out exactly what sensor component is used for the proximity sensor in the 3G/3GS vs the 4? Maybe there are some specs on the sensor itself that would be more telling?

TrentP wrote:
I tested the proximity sensor the same way I did originally (reference original proximity discussion Apple locked). Basically, it acts the same. The display cuts off the same and has the same memory effect.

I made a few test calls and placed myself on speaker phone twice. I could watch in the mirror and see the display turing on and off. I placed the phone on my ear and just slid up and down and forwards and backwards. I never removed it from my ear. The display was constantly turing on and off. The phone never lost contact with my ear. I place the phone on a stationary part of my ear. I left the top part half (where the speaker, sensor, etc are) in the same position. I just moved the bottom part up and down a little. The display would turn on and off.

I tried to do general movements like I would during a normal phone call. It acts exactly the same.

I was sure hoping that this would address this issue.

Jul 15, 2010 6:37 PM in response to Nubz N.

Although I did not read all the responses in this thread, I would just like to weigh in and say this:

This being my first iphone, I had never heard of the "proximity sensor" and I figured that all iphone users must call the bank in the middle of a conversation with their brother, and then mute the call, and then hang up on him 3 times during a short conversation, prompting him to exasperatedly say, "Do you want me to just call you back on your home phone?"

Now I know better. I sure hope this is something that can be solved soon.

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Issue with Proximity Sensor during calls - Continued.

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