The article about unexpected charges to smartphone users caught my attention. An email to Jim Hamm gives us his take on this potential problem. "Years ago when we first got a cell phone and had to be aware of possible roaming charges while traveling in the US. Now we are on AT&T and roaming may be a thing of the past -- at least for us. If AT&T doesn't have a signal in a particular area, then we just don't get service and can't make a call. I'm not sure what the situation may be for Verizon." See the article here.