I'm on my second 7100i and am starting to experience the same problem with this one that prompted me to swap the first one. The handheld frequently reboots for no reason, often when I'm in the middle of a call. I saw an old thread where this was a widespread problem with 7100t's. Is anyone else experiencing this with their 7100i? Any suggestions out there? I've lost three phone calls today because of this problem.

I haven't had an issue like that with my 7100i. Have you tried a hard reset? Take the battery out and put it back in the phone after a couple seconds - that might help.

Ditto here. No issues what so ever on both of my 7100i's.