Yeah I know how the roaming works I have sprint now. I have terrible service in my house and I'm always roaming in Detroit on the medical campus (probably because the place is built to withstand a riot) and my battery life is pitiful. When I go up North I'm always roaming and even then I can't make a call unless I go into the city. AT&T has better service at my house (slightly. Why it's not better I'm not sure), better in Detroit, and far better up north even away from the city.