I wouldn't be so fast to dismiss 3G. T-mo is in the process of rolling out HSPA+ updates to their 3G network that have higher theoretical speeds than current 4G

I wouldn't be so fast to dismiss 3G. T-mo is in the process of rolling out HSPA+ updates to their 3G network that have higher theoretical speeds than current 4G networks. The first round of markets went live within the past few weeks; something like 15 major markets (ATL is the only one I remember for sure).