Data Stash

Data Stash™ lets you roll forward your unused 4G LTE data – up to 20 GB worth in most cases – into the next month.


You have 12 months to use it at no additional cost. If you select a qualifying plan, we'll automatically enroll you with Data Stash so that you can store up to 20 GB of unused high-speed data for up to one year. If you want to stop worrying about data limits, make the switch to T-Mobile ONE™ where you'll get unlimited talk, unlimited text, and unlimited 4G LTE data on your smartphone. Learn more about T-Mobile ONE.


On all T-Mobile plans, during congestion, the small fraction of customers using >50 GB/mo. may notice reduced speeds until next bill cycle due to data prioritization. Video typically streams at DVD quality (480p or better).



How Data Stash works

Every month, any left-over high-speed data is automatically placed into your Data Stash (up to a limit of 20 GB for most customers) which can be viewed on the T-Mobile app or at My T-Mobile. Once you use up your included plan high-speed data, then you use your oldest stashed data first. Once that is used up, you still have Internet access at a reduced speed. You can carry forward up to 20 GB (for most customers) of unused high-speed stashed data, month to month, at no additional charge. Data Stash, only from T-Mobile


No need to sign up

There's nothing you need to do to get Data Stash. If you're already on (or sign up for) an eligible Simple Choice plan with 6 GB or 10 GB of 4G LTE data or more, then Data Stash is already available and automatically active on each line of an eligible plan.


Traveling in Canada and Mexico

If you're on a qualifying Simple Choice plan and you're traveling in Mexico and Canada, you'll still have access to your regular, high-speed data allotments, and unused data will still accrue in your Data Stash. If you use up your regular allotment of high-speed data, you can tap into your Data Stash just as you could if you were in the U.S.




Regardless if you have an individual, family, or business account, all you have to do is be on one of the eligible plans, as well as have 6 GB or 10 GB for smartphones, or 6 GB or more for tablets and data-only devices.



Your data and Data Stash usage

If you use up your allotment of data, as well as exceed the amount of high-speed data in your Data Stash in the same month, you'll still have data at no extra cost, but your data will be at a reduced speed. You'll never be charged overages for going over your data bucket. The next time there’s a month when you have unused high-speed data, that data will roll into the next month and into your Data Stash.


Adding more high-speed data

We understand that there might be times when you might want to add more high-speed data to your account, such as:

  • You're experiencing reduced data speeds after reaching your data allotment for the month.
  • You used up your monthly allotment and you don't have data saved up in your Data Stash.


If you're on a Pay in Advance (Prepaid) plan, you can add more data. Just pay using a credit card or bank account.


If you're on a postpaid Simple Choice Plan, you can do one of the following:

  • Change your data service. You can make an increase to the amount of data on your plan.
  • Add an On Demand Data Pass. If you need high-speed data for just a short time, you can buy a 1-day (500 MB) or 1-week (1 GB) data pass. Data passes are not subject to Data Stash.



View your Data Stash usage

If you have an account with Data Stash, you can view your usage and balance through My T-Mobile or the T-Mobile app.


To view it using the T-Mobile app:

  1. Open the app.
  2. On the Data Usage tile, tap View usage.
  3. Tap View line details on a specific line on your account.
  4. You can see a summary on the Data Stash Usage tile.


To view it using a computer:

  1. Go to My T-Mobile and log in to your account.
  2. On the main page, select USAGE located at the top of the page.
  3. In the Usage overview, you'll see all lines on your account. Within a specific line, select View data stash to see your Data Stash summary.


If you need assistance, contact T-Mobile Customer Service.



Data Stash FAQs

Why does my Data Stash look different?

The information listed above is for Data Stash with our most-recent eligible Simple Choice plans, so your Data Stash may be different. If you’re still on an older plan, you can move over to the current Simple Choice Plan at any time. Or you can also sign up for T-Mobile ONE, where you don't have to worry about how much data you're using. Go here to learn how to change your plan. If you're on your phone, you can use the T-Mobile app to see what your plan includes. Or, log in to My T-Mobile for more information about your plan.


What happens if I change my data amount?

If you change the amount of 4G LTE data on your plan within the 6 GB to 10 GB range, you won't lose any stashed data, as long as you haven't reached your cap. For example, if you have 10 GB on your Simple Choice plan and you move down to 6 GB, you won't lose any stashed data. But, if you change from say 6 GB to Unlimited 4G LTE on your smartphone, or from 6 GB to 2 GB, your stashed data will not be saved.