It might not be the most ground breaking promotion to ever exist, but it could come in handy.
Per 9to5Mac, wireless carrier T-Mobile announced its latest Un-carrier initiative on Monday with a new “Data Stash” feature that allows customers to bank unused data and carry it over month-to-month for up to a year.
The carrier is also offering 10 GB free for new and qualifying customers to kick things off, but it notes that the “data does not begin carrying over until after free 10GB runs out.” The free 10GB promotion will last until 12/31/15.