Just what kind of a smartphone will the HTC One be like when it runs on T-Mobile’s 4G data plan? The perfect smartphone, as HTC would want you to believe, especially since the 4G data plan has no annual contract, making it a marriage made in tech heaven. Sorta. Well, I guess we will just have to be patient if we want to find out pricing and availability details of the HTC One over at T-Mobile, so stay tuned! It should definitely reside in the high end side of things, never mind that the hardware specifications do come close in certain areas to the HTC Butterfly.