I full time and use a dumb phone and a WiFi card. Both are Verizon. The WiFi works wherever I have a cell signal. Most of the time I'm on the 3G network. But, I'm constantly amazed at the increasing availability of 4G, particularly in areas I wouldn't expect. Wifi costs $50 for 5G. I've exceeded it on a few occasions, paying $10 extra in those months. Works very well in the east. Check coverage areas where you travel most often. Wilson is soon coming out with their newer version of the Wilson Sleek, a 4G booster for cell and WiFi devices. Should help in the fringe areas.