I have been having this strange problem with my BB 8700g. It may have happened since I upgraded to the new os 4.2.

This problem is intermittent. I will go an make a call. The phone says connected but I can't heat anyone on the other side. I am not sure if they hear me. If I go and redial it will do it again. Then sometimes it fixes itself. Other times I need to take out the battery for a few seconds, then re-boot and it works fine.

Any suggestions on this issue?