I realize that population centers are just that, where the majority of a given region's/state's/nation's people live. With that in mind, that is where most network testing is done, and rightly so. However, the great swaths of territory in between metros, and almost as importantly along interstate and other major highways, is where a good deal of wireless customers find out what their chosen carrier has done with their network. While T-Mo may be making some headway in this area, it is still in the smaller non-urban and greater suburban areas connecting large cities. Like between Orlando and Tampa FL, just taken as a for instance for distance between 2 better known cities since I really don't know the coverage in that strip of interstate. Stretching to a greater distance like Nashville and Indianapolis or even Chicago shows very spotty coverage still for the magenta carrier. They were just late to the WE'RE GONNA SPEND LOADS OF $$$ ON INFRASTRUCTURE game, and concentrated, until quite recently, on its wheelhouse of big cities. Like in my small city of only a quarter million, one can almost exactly predict when one shall lose T-Mo's lte signal (and pretty much hspa+ as well) since it follows the city limit. Of course big red's signal in pretty much all aforementioned territories is there and pretty strong if not good. So yes, magenta's working on filling in gaps they say, but the work they've ahead of them seems nearly insurmountable. Add to that the approaching 4.5G and 5G network rollouts, it's hard to imagine how T-Mobile/Deutsche Telekom (or most companies really) can continue to afford to broaden existing technology's (LTE) footprint in comparatively rural areas AND rollout 5G to already well covered areas plus those rural areas.