Ringer keeps playing / stuttering after call is answered

[soupcxan]

I have an iphone 4 with the latest software update. The last couple of times I've received an incoming call, I swipe my finger across the screen to unlock while the phone is ringing. The screen updates to show the connected call, but the speaker keeps repeating a couple of seconds of the ringtone over and over again (I am using the default ringtone). It's in some kind of stuttering loop. This makes it impossible to hear or be heard by the caller. If I toggle to speakerphone, the noise stops, and I can toggle the speakerphone off and the call is as normal.

The only thing I have changed recently on my phone is turning on the bluetooth (I bought a BT headset). But this problem happens even when I'm not using the headset.

This is a wierd problem. Has anyone else experienced it?

 

[soupcxan]

Update: I rebooted and the problem hasn't happened again.

 

[Grapho]

Update: I rebooted and the problem hasn't happened again.

I have been having this same problem. I also suspect it has something to do with bluetooth. I am taking my iPhone back. Once this happens my battery drains almost completely. I can't have this thing happen.

When I restart the phone, the problem might go away for a couple of weeks, but it always returns. I have reset my iPhone twice to no avail.