My wife and I are on Verizon. We both have Moto Droids (although hers is much newer than mine). In general, we've found that we get acceptable to good reception in many spots of the Valley. I can't recall specifics but I know we've both made calls from around the Village, from Yose Lodge, the Ahwanee and probably elsewhere (I know I've also managed to text her when I've been further west in the Valley). We rarely hang near Curry (unless we're parking there to go up the Mist Trail) so can't comment on that area. Also get pretty good reception at GP and Wawona as I recall. When we're in the southern part of the Park, we usually stay in Yose West and reception is a bit more hit-or-miss there although my wife's phone does better than mine...we can usually at least get reception of the "OK, I got a signal, now to make sure I don't accidentally move to the left" variety!
Can't recall if we've ever tried calls from the TM area although I think we probably have (my mother-in-law is 90 and lives alone so my wife likes to check in with her at least once a day).
Not sure if that helps any.
FYI, up until a few years ago, my wife was still on an AT&T plan. IIRC, her coverage was more spotty than mine at that point (I was on Verizon).
Edited 1 time(s). Last edit at 02/27/2014 08:53AM by DavidK42.