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T-Mobile will let you roll over your unused data from month to month
July 11, 2025
As part of its Un-carrier initiative, T-Mobile will let users roll over unused data from month to month, for up to a year.
Un-carrier 8.0is “probably the biggest thing we’ve ever done since Un-carrier 1.0,” said T-Mobile’s boisterous CEO, John Legere. And indeed, this is an industry first, at a time when US carriers are increasingly relying on parsimonious data plans to generate the bulk of their profits.
T-Mobile is now introducing Data Stash, which is essentially your reserve of unused data that you can tap into for up to a year. At the end of every month, any data that remains unused will be added to the Data Stash; there is no limit on how much data you can accrue in the Data Stash, so you could, for instance, hoard gigabytes to use during your yearly holiday.
This is a very bold move, and one that is likely to net T-Mobile more points in the eye of American users. John Legere explained it in his typical colorful way:
Is this initiative something you would consider switching to T-Mobile for?
T-Mobile Unveils Data Stash – Now Your Unused Data Rolls Forward
With Un-carrier 8.0, T-Mobile becomes the only national wireless provider to let youroll your unused high-speed data into the next month
And, every Data Stash comes stocked with a gift of 10 GB of America’s fastest 4G LTE data to start
Bellevue, Washington−August 12, 2025− T-Mobile (NYSE:TMUS) today announced its next industry-rockingUn-carrier™ move− eliminating the infuriating wireless industry practice of confiscating unused data you’ve already paidfor. With Un-carrier 8.0, high-speed data you don’t use each month automatically rolls into a personal Data Stash™so youcan use it when you need it for up to a year. And, the best part is thatData Stash is included at no extra charge for every single new and existing T-Mobile customer–individual, family or business–on an eligible postpaid Simple Choice plan who buys extra high-speed data for their smartphone or tablet.
In addition, T-Mobile announced theywill start every Data Stash with a whopping 10 GB of 4G LTE data– for free. That’s 10 GB of free data for every line in the family on a qualifying plan. And on top of that, the Un-carrier announced several major new milestones in the build-out of its Data Strong™ network.
“Can you imagine your gas station siphoning unused gas from your car each month? The US wireless industry is even worse,” said John Legere, president and CEO for T-Mobile. “Americans have been gamed by the carriers into buying huge data plans – all to avoid getting screwed with overage penalties. Only to find out they bought more than they need which is then confiscated by the carrier. For the consumer it’s lose, lose.
“That data is rightfully yours,” added Legere. “And, we’re putting an end to this appalling industry practice today. With Data Stash, when you buy additional high-speed data, there’s no need to lose what you don’t use.”
With T-Mobile’s Data Stash − the first such program from a national wireless provider − you don’t have to worry about buying extra high-speed data you’ll never use − or not having that data when you need it most. You’ve paid for it. Now you can use it when you need it for up to a full year.
Starting in January 2015, Data Stash will be automatically available at no extra charge to every T-Mobile customer– every individual, family and business – with a postpaid Simple Choice planwho has purchased additional 4G LTE data, 3GB or more for smartphones and 1 GB or more for tablets. And, you’ll start out with a Free Data Stash with up to 10 GB of 4G LTE data.
Once you’ve used up that Free Data Stash, any unused high speed data − rounded up to the nearest megabyte – will start to roll into your Data Stash automatically every month. And there’s no limit to how much data you can collect in your Data Stash. When you need extra high-speed data, you’ll automatically start tapping into your data deposits. Now, when you pay extra for 4G LTE data, you won’t lose data you don’t use.
Businesses face the same challenges when it comes to the data guessing game – just multiplied by the number of employees they have. Think it’s hard choosing how much data to buy for you and your family? Try figuring out how much to buy for you and your 50 employees. More than a third of U.S. businesses on shared data plans have been hit by punitive overage penalties, and others resort to buying more data than they need – all just to avoid budget-busting overage penalties at the end of the month.
“Like every Un-carrier move we make, Data Stash also came from listening to customers,” added Legere. “This year on Twitter, customers asked the carriers to create a program to roll data forward more than 40,000 times. So this isn’t rocket science. It’s just that we seem to be the only company in this industry that cares enough to listen. That’s fine by me.”
T-Mobile’s Data Strong Network ExpansionData Stash is made possible by T-Mobile’s unique Data Strong network design which was purpose built for the data-intensive way people use smartphones and tablets today. Today, after an epic year of network firsts and massive advancements, the Un-carrier announced several major new milestones as it continues to expand and enhance its network at an unprecedented pace:
The Un-carrier expects to continue its rapid fire network improvements in 2015 and has already set a few resolutions for the New Year − like reaching 300 million people with T-Mobile’s blazing-fast LTE network.
For more information on T-Mobile’s network advancements this year, please read thisblogby T-Mobile CTO Neville Ray. For more information on T-Mobile’s Data Strong network, please visitwww.t-mobile.com/DataStrong. For more information about T-Mobile’s Data Stash and other ground-breaking Un-carrier benefits, please visitwww.t-mobile.com/DataStash.
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