Generally I don't have any problems unless I'm inside the house. This is not good because we just got rid of our land line.

AT&T GSM is excellent for overseas and in larger Metropolitan areas. In Columbia SC and the near by areas the service is very poor. The service is being provided by Cingular. There is another provider NCCC something and they are very poor in coverage also. And Columbia SC is telling the Cell providers that no more towers. So there is very little hope for better cell service in SC. So business people who maybe doing business in SC if you want cell service go to another state.