My iPhone has rather poor service in my house - works maybe half the time (all carriers are bad in my location). I got 3 calls this morning but didn't answer them: 8AM, 10:21AM,10:27AM. The first 1 came while I was home, the next to came while I was at work (I have full service at work). I assumed that none of these 3 people left voicemails because I didn't get any notification on the phone. But then at 12:45PM I got a notification that I had 4 new voicemails - 3 for the missed calls and 1 for a call that never got to me. Anyone have any experience with this?