If you are a T-Mobile subscriber , check your email for a direct link to a cool new coverage map that has been added to your my.t-mobile page. The new map shows exact addresses of recently added T-Mobile towers in your area, as well as their coverage footprint. At this time you must log in via your My.T-Mobile online account to view the new coverage maps - it does not work for To-Go users or those visiting the plain T-Mobile coverage site. Tip: If you’re not a subscriber, use the T-Mobile compass tool available at http://compass.t-mobile.com/default.aspx This shows new cell sites with a magenta T so long as you are zoomed in 10 miles or closer.

Link: New T-Mobile Coverage Map For Subscribers
Link: T-Mobile’s Compass Coverage Tool - detailed tower information for non-subscribers
via: HOFO members ThePhantom, blacknoi, gregsmith59