They've been rolling out test towers as they refer to them. They are actually starting to cover Birmingham pretty well. You probably won't have much getting 4g inside as these towers appear to be tuned different. They push out farther but have less penetration I believe. Check out clear.com/coverage and you will see where we have 4g so far. Also compare our coverage to Atlanta, you will notice we have a few towers covering a large area and they have a whole bunch of towers each covering a much smaller area.