Originally Posted by simollie
I have the same problem with redial on my VZW Q9c. Sometimes it works sometimes it doesn't. When it starts to give the "Error Cannot complete call. The signal may be unavailable or the phone number may not be valid..." message there's no hope to redial. I have to dial the number manually.
I don't think you have to dial the number manually, I know that waiting a few seconds counters whatever is happening to cause this problem. I would guess that by manually dialing, you are allowing enough time to pass for the phone to figure itself out. Also, I always, ALWAYS have to exit to the homescreen before it will work again. I have no idea what that is about.