T-Mobile is still coming up with clever new ways to shake up the wireless industry and on Tuesday it revealed its “Un-carrier 8.0” plan that will let users with capped plans roll over unused data an apply it to future months’ data caps. During his announcement of the new plan, T-Mobile CEO John Legere pointed out that many wireless customers have unused data every month because they are so nervous about getting hit with overage charges that they don’t want to come anywhere close to reaching their monthly limits.

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In its official release, T-Mobile says that the new plan is aimed at “fixing yet another infuriating wireless industry practice — the risky guessing game we all play trying to figure out how much data we need every month.”

“The old-school carriers have rigged the game with plans purpose-built to make you pay for more data than you need — or pay overage penalties,” T-Mobile writes. “And then they confiscate what you paid for if it’s not used within 30 days, bilking customers out of billions of dollars.”

T-Mobile says that every T-Mobile customer can take advantage of its Data Stash program at no extra cost as long as they subscribe to “an eligible postpaid Simple Choice plan who buys extra high-speed data for their smartphone or tablet.”

Anyone who subscribes to a qualifying plan gets a stash of 10GB of LTE data to use. Once they use this up, T-Mobile says that “any unused high speed data − rounded up to the nearest megabyte – will start to roll into your Data Stash automatically every month.” Furthermore, T-Mobile says that there’s no limit to how much data you can roll over, which means people who don’t use all of their monthly data could wind up with a huge trove of data after a short time.

If you want to learn more about T-Mobile’s Data Stash, check out the company’s press release available at the source link below.