There's no mistaking it: Verizon's decision to resurrect its unlimited data plan was a shot across T-Mobile's bow. And to no one's surprise, the magenta-hued network is responding in kind. As of February 17th, T-Mobile is upgrading its standard One plan to include HD video streaming and 10GB of LTE hotspot tethering. You no longer have to spring for a pricey add-on just to watch Netflix at high quality. To sweeten the pot, the carrier is also running a promo that gives you two lines for $100.