Poor/No Service in Good Coverage Area

magenta9627502

    Why do I have poor and frequently "no service" in areas listed as "4G LTE HD voice and our top data speeds, Fair signal: Cell reception outdoors and occasionally indoors" according to the T-Mobile coverage map (Patuxent River, MD). I just recently switched to T-Mobile after consulting the map and have been very disappointed. Is the coverage map simply inaccurate? It is quite a hinderance to have absolutely no cell signal while at work during the day.