Activate or Upgrade to a 4G Smartphone at Participating T-Mobile Retail Locations to Win Passes to an Exclusive Meet and Greet with Dulce Maria on Thursday, Jan. 19. Simply upgrade to a 4G Smartphone or activate a new line at a participating T-Mobile store in Chicago and surrounding suburbs from January 9-18 for a chance to receive two passes to an exclusive meet and greet with Dulce Maria on January 19, where fans can interact with the singer, take photos and get an autograph. Passes are limited and based on availability. The meet and greet will take place at the T-Mobile store, 2312 S. Harlem from 5pm to 7pm. For more information, visit www.facebook.com/TMobile.