While knowing that rates will remain the same for five years does give you peace of mind, the new guarantee is nowhere near as generous as 2015’s Un-contract plan that said your prices would never go up. T-Mobile was cheeky enough to imply that prices might even go down. That did not age well.
It’s also not as good as the Price Lock pledge, which says your prices will remain the same as long as you keep the current plan, and in case they do rise, T-Mobile will be responsible for your final month’s bill if you leave. That T-Mobile is accused of not making good on the promise is another story.

Today is the last day to lock in prices at T-Mobile


T-Mobile will stop offering Price Lock to customers from tomorrow. | Image Credit – The Mobile Report
According to an internal document, April 22 is the last day to get the Price Lock guarantee.
It’s no coincidence, considering the company only recently raised prices for customers who didn’t expect hikes, and its new plans don’t promise indefinite guarantees. That era is over.
T-Mobile hasn’t said what will happen when the five-year guarantee expires, but logic dictates that your price will rise to match the current rates.
If you want to be able to enjoy a Price Lock for longer than five years, your best bet is to sign up before tomorrow.