Both. Internet is really bad, but I can't take a phone call most of the way between Pittsburgh and Toledo (except when in the vicinity of Cleveland and Youngstown), for example. Same with the trip to DC. You have signal, just not reliable service. I generally hold hour or longer conversations to when I do a drive like that, helps pass the time, but I just can't do it anymore on T-Mobile. Calls drop way too frequently. I was driving to Toledo a few weeks ago and the call dropped every three or four minutes, I gave up after 6 tries.