Last night I noticed that my phone icon on my home screen had changed into a little android icon and when clicked it said "App not installed". I removed it and saw that my phone icon was still in the app drawer itself so I just put it back where it used to be. This morning when trying to make a phonecall I noticed that the person on the other side couldn't hear me nor could I hear them. I figured it was that issue so I went and updated to the latest cyanogenmod 10.2 build and the issue still happens. I'm not sure what to do about this now and was hoping for some help?