GP Mobile is a premiere agent that owns & operates T-Mobile locations in 11 states. Headquartered in Dallas, TX, GP Mobile op ... erates over 240 T-Mobile stores in the Texas, Oklahoma, Kansas, Louisiana, Mississippi, Alabama, Tennessee, Georgia, North Carolina, South Carolina, and Florida. GP Mobile is a subsidiary of Sun Holdings LLC. Sun Holdings is one of the most influential franchise operations in the nation. In addition to GP Mobile, Sun Holdings LLC operates Burger King, Popeyes, Arbys, Krispy Kreme, GNC, & Golden Corral. read more