Long-time Slashdot reader Shakrai writes: T-Mobile, formerly known as the “Un-carrier”, confirmed plans today to force customers on older/cheaper plans onto newer/more expensive ones. Astute observers of the cellular industry will surely recall the former CEO, John Legere, assuring customers that they would always be able to keep their existing plans and prices would never rise without their consent. They will also observe that this comes nearly three years to the day after T-Mobile merged with Sprint, with one of the conditions for that merger being they would not raise prices for three years. It’s also worth noting that T-Mobile continues to buyback its shares, recently announced thousands of layoffs, and is now paying a dividend. T-Mobile tells CNET that users on its older plans will see “an increase of approximately $10 per line with the migration,” starting with their November bill. Those who sign up for AutoPay can save