Issue with Proximity Sensor during calls

I have to say that I am having this problem, too. I was talking to my brother, and then I couldn't hear him at all. The phone had put him on hold, and I was at my main app. screen. So I had to go back into the phone call and take the hold off. I tried playing around with this when playing my voicemails, and it seems the phone screen stays turned off ok when doing this. I even tried pressing another voicemail, as soon as I covered the proximity sensor, and it wouldn't let me. So, even with it taking two seconds to turn the display off, it seemed to me that it wasn't letting any key presses go through. Now, while talking on the phone seems to be another story. I've been using my bluetooth, mostly, but I will be playing around with this some more.

I really hope this is a software glitch of some sort. I've had every iPhone, and never had any of the problems that I've had with this one. I hope everyone keeps posting in here to share these problems.

I have to jump in to - people think I'm hanging up on them when my face pushes mute or hold. Along with the antenna issue - DID ANYONE AT APPLE TEST THE IPHONE BEFORE THEY RELEASED IT???? OR DID THEY JUST LEAVE IT UP TO SOME YOUNG DURNK GUY TRYING TO IMPRESS THE LADIES AT THE BAR THAT LEFT THE PROTOYPE ON THE STOOL FOR SOMEONE TO TAKE AND POST ON THE INTERNET???

Steve J. Stop pursuing Gizmodo and party for your security faliure and focus on fixing the iphone!!!

I put my finger there and the phone flashes on and off - definitely not working right

I also have this problem albeit not as bad, I have this problem only when I use my shoulder to hold the phone. Like when your unlocking the door to your home and your on the phone I shrug my shoulder up to my phone to free up my hand. I believe it to be a sensitivity issue and can be fixed through a software tweak.

If the e-mail exchange Steve Jobs had with a consumer regarding the antenna issue was legit, I find Steve's last word on that issue to be insulting: "Retire, relax, enjoy your family. It is just a phone. Not worth it."

If Steve thinks that all of us are clammering over something that's "not worth it", he is sorely mistaken. Of course it's not a big deal to him -- he already has our hard-earned money (at least for the next few weeks if we start returning the phone in droves.) Steve and the rest of his team have created a device that is not a "toy" for many of us. It is an essential communication tool that allows us to stay in touch with our families, friends, and colleagues. Many of us rely on a phone to be able to get business done and make a living. No, Steve, it is NOT just a phone. It is an essential part of the way we live and do business in this day and age.

Want to be counted among the many having the proximity sensor problem. I realize that Apple won't admit anything regarding it right now, but I can have my confidence in them restored if they will just PLEASE FIX IT!!!!

Same here. Boo!

Well, it's been two days since I got rid of the leather Belkin case(which wasn't for the iPhone4 but for the 3) and I have had zero proximity sensor issues since. As I said earlier-I have had my phone since the day it came out and immediately had the same issues as most of you on here. Once I took off my leather case, the problem went away completely. I've had a rubber Belkin case on it for two days and no problems whatsoever. Hopefully you guys get the issue worked out. Those of you who still have problems-have you taken the cases off and tried to make calls with just a naked phone? Good luck

I have an Incipio case that's designed for the iPhone 4. I have the problem with the case on and off. It makes no difference whatsoever.

I too am having this issue. I just spoke to an Apple assistant on the phone, who claimed he hadn't heard of this before, and that he wasn't sure if it was a software fault or hardware fault. One thing he did ask was if I was using a screen protector, as that may prevent the sensor from working properly. I am reluctant to remove the screen protector I've got on, as it is that last one in a pack of 3 costing £10, because the first 2 had lots of bubbles. I was just wondering if other people can confirm they are having this problem without screen protectors?

Same problem. Everyone I know that has an i4 is hanging up on me constantly. I'm doing it to others too. It hangs up everytime you hold it with your chin or take it away from ear a few inches and put it back. Also have horrible and spuratic cell reception. My 3gs rocked everywhere in town. This one barely connects to wireless anywhere in town. Man... so disappointed.

Am having the same problem. Called Apple and they acknowledged that it's a problem with some phones. Unfortunately, "inventory" on replacement phones is so low that I cannot be guaranteed a replacement phone if I go to the Genius Bar. So, I have to ship the phone back to Apple and wait for my replacement...ugh!! Luckily, I've still got my 3GS....but it's still really frustrating!!!

Yes that was my problem, a 3GS leather case. I just use the bumper and have had no problems since. To be honest I don't like the feel of the naked phone either. Reception is as good as the 3GS on O2. I wonder if any jail broken phones are having problems.

My wife got a replacement phone today from the Apple store. Same exact problem. She is still hanging up on people during calls. She is currently using the ear buds that come with the phone to place calls until they issue a fix. It is very frustrating. Hoping that Apple does something soon...

People, where exactly is this sensor located on the phone?