I was on T-Mobile for a few months this year. There are large swaths of metro Boston and Cambridge where they have no coverage -- most of the Esplanade, Harvard

I was on T-Mobile for a few months this year. There are large swaths of metro Boston and Cambridge where they have no coverage -- most of the Esplanade, Harvard Square, every MIT building I've been in, Route 2 from Alewife through most of Arlington. All of these places are fully green on their coverage map. So I don't even want to know what they mean by yellow and white.