Still, T-Mobile is killing off its $50 Simple Choice Plan and replacing it with the $70 unlimited “All In” offering, which means new customers will have to pay more for single line coverage under the carrier’s new deal. That’s a bummer, especially if you don’t need an unlimited plan.

Sievert, however, says that nearly 85% of its daily sales go toward its unlimited plan, so consumers are clearly interested in it. What’s more, T-Mobile says the majority of single line customers use pre-paid plans rather than post-paid.

But what if you’re a family of four that only wants a little bit of data each month? Currently, T-Mobile’s Simple choice lets you purchase four lines with 2GB of data each for just $100 per month. With T-Mobile One All In, though, that jumps to $160 per month.

Again, T-Mobile isn’t forcing existing customers to switch to the new plans, but it is eliminating an inexpensive plan for something a bit pricier.

To help offset some of the increased cost of T-Mobile “One All” In compared to Simple Choice, the carrier is offering what it calls KickBack. The feature ensures that customers who use less than 2GB of data each month will receive $10 back in the form of a bill credit for each line they have.

If you go over that, though, you’re out of luck.

Despite that, “All In” sounds like a promising offer. The idea that it will eliminate hidden taxes and fees and clean up customers’ bills is incredibly helpful, and the KickBack feature should prove beneficial to low-use consumers.

The question now is: How will T-Mobile’s competitors respond?

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