I have an AT&T iPhone 4, and my mother recently got a Verizon iPhone 4. We've been trying to both do FaceTime, but the video is extremely choppy, and then hangs up after 10 seconds it seems like. We've tried Skyping, and haven't had any issues. We both have solid WiFi signals. Just curious as to why it would keep dropping calls? We've both tried turning off and turning on FaceTime in our settings. Has anyone else had similar issues with FaceTime consistently dropping calls? If it helps, she has a LinkSys router and I have a Time Capsule.