To celebrate the release of X-MEN: DARK PHOENIX in theaters, 20th Century Fox partnered with T-Mobile.

The partnership took the form of the T-Mobile Dark Phoenix Premiere Social Sweepstakes which was part of T-Mobile's ongoing T-Mobile Tuesdays promotion.

On Tuesday, June 4, 2019, T-Mobile customers could win tickets to X-MEN: DARK PHOENIX on opening weekend for a value of $4. T-Mobile and 20th Century Fox also came together to give an all-expense paid trip for two to the red carpet premiere on June 4, 2019.

To enter, participants responded via Twitter to T-Mobile CEO John Legere's post and let him know what dream mutant power they would like to have. A winner was chosen at random. That grand prize winner received a three night four day trip for two to Los Angeles from June 2 through June 5 to celebrate the film.