This just started yesterday, but it only happens every 1 out 5 calls. When I try to make a call, it is cutting in and out from the moment it starts dialing and I can barely hear anything. I have to hang up and redial, which it is then usually clear as day. Could this be a software issue or is it most likely the antenna? I am AT&T, 64 GB jailbroken on iOS 8.1.1. I also use CallBar, but I can't see how either of these modifications could affect something that is usually hardware related. I'd prefer not to take it in to the Apple Store as I would have to unjailbreak it. Any suggestions? Thanks!