Sprint just became the best carrier in the world for music fans Sprint has struggled to keep up recently as it's faced major pressure from T-Mobile's "Uncarrier" campaign and its own "Framily" campaign has been flat-out frightening*at times. That said, Sprint may have finally come up with a way to lure some new subscribers on Tuesday as it an**unced that starting on May 9th, both new and existing customers who subscribe to its "Framily" plans will get a free six-month trial of music streaming service Spotify.