F at&t!!!!!!!

I switched from Sprint to ATT about 4.5 years ago. All I can say is I have been all over the US, to Alaska, major cities in Canada and to a number places in the Carribiean and have never had an issue with coverage or dropped calls. I can't say the same for Sprint.

Overall I am quite happy with ATT.

I think you will find that any carrier will have areas that the coverage is not good and you need to select the carrier that provides the best service for you.