Or, How T-Mobile Gave Me Something to Be Mad At, When I Needed to Be Angry tl;dr Today I was getting frustrated with my (lack of) connectivity in the back of my parents’ house and so I decided to check out T-Mobile’s site to see how much it would cost to turn my iPhone 6 into a mobile hot spot for the month. This was not easy. In fact, I still don’t know how much that would cost for sure.