Currently Being ModeratedDec 1, 2010 1:18 AM (in response to Ksleo)Depends upon the reason.
Are you in a rural location with not enough capacity on the network as thats a common cause before anyone starts talking about phone problems itself (which there certainly are).iMac 27", MacBook Pro 15", iPhone 3GS, iPod Nano, Mac OS X (10.6.5), Time Capsule - just say no.
Currently Being ModeratedDec 1, 2010 2:22 AM (in response to Ksleo)Well, for some reason I have trouble on rare occasions with one particular person I talk to. What makes it even weirder, it happens with both their landline and his cell phone which he says are on different networks (T-Mobile and Verizon, I think). When it acts up, I can lose the call several times in just a few minutes.
I took my phone into the apple store to have them check. They said it didn't show any dropped calls which, they said, meant it had to be a problem with the other network.
That may be true, but it could also be an excuse. I've yet to have this happen when talking to anyone else though.
Another possibility is that you have the proximity sensor problem. Since I saw you only posted once, you may not be familiar with it but, in short, the screen can come on, even when against your ear and if the screen is on, your cheek can activate buttons, including the one to end the call! You could also get muting, speaker phone, even calling someone else!
There are tons of discussions about it here and arguments over what the cause is (one thread is 90 pages long and it was a continuation of two previous very long threads!).
Check what version of the operating system you have. The original was 4.0. The next update (4.0.1) basically just changed the signal bar calculations with the result that they are more accurate, but will give fewer bars for the same signal on 4.0.
Next came 4.1 which did something to change the sensor issue. It worked for some, not for others, and some said it made it worse! But, in general, it seemed to increase the power to the sensor and I'd say helped more people than it hurt.
The latest version (4.2.1) didn't say anything about changes in sensor operation, but I know from my tests they definitely changed something.
As before, some say it got worse or didn't change - but I've only seen a handful who said that so it may be nothing more than the amount of problems that seem to happen with any update going out to millions of people. A larger number have said it finally fixed theirs.
Those are the two main things I'd look for - a problem that only happens with certain calls, especially if on a particular network. And the possible proximity sensor problem.
One thing you can do to check the sensor is to go to your settings and turn the screen brightness to max (probably turning off the automatic option). I found that when the screen came on, I could miss it at the usual setting, but on bright, it got my attention. This also depends on how you hold it. If against your cheek, it may not make any difference since you'd be covering the screen up.
There is a app for 99 cents called "Call Guard". After starting a call, you run the app and it gives a blank screen so you can't activate any buttons. You can still hang up by pressing the top button or by pressing the home button to quit the app and then going back to the phone app to hang up.
But one really nice thing about the app is that when active, it marks and numbers every time your face touches the screen (if the screen ever comes on). So you could use this for awhile and check after each call to see if there were any touches. If not, the problem probably isn't the sensor.Macbook, Mac OS X (10.6.2), http://picturehawaii.blogspot.com/2010_09_01_archive.html
Currently Being ModeratedNov 30, 2011 4:08 AM (in response to dbk9999)
My first one did this. It was dropping almost every call, I changed out the sim and that did not solve the issue. Also people were not always getting my voicemail, and when I would call someone, they either couldn't hear me, or the call was all broken up and I would have to call them a 2nd time to have a clear connection. I tolerated it for a month, and then AT&T and Apple said I needed to exchange my phone. So far this issue hasn't happened since I got the new one Monday. I have to use it more and see. It is not the network because my boyfriends iPhone 4S is perfectly fine. My phone dropped calls from day 1, it was bad. I did so many network resets with AT&T and wasting my time resetting the phone, nothing worked. So far the one I got Sunday has a clear connection.