In MA, I switched FROM Cingular TO Verizon - I was constantly getting dropped calls, especially on my commute to and from work. I live in the burbs, too, but a little further east than your daughter (my usual area is Lexington, Concord, Bedford, Carlisle, Westford, Chelmsford).

With Verizon, I can get all the way home from my office in Marlborough without dropping a call - not so with Cingular.

Good luck.

SheFly