In Sprint’s new TV commercial, the carrier points out that AT&T Mobility and Verizon “charge you extra for going over 2 GB of data.” “T-Mobile claims they’re unlimited, but use your phone a lot, and they slow down your data speed,” according to Sprint’s ad. “With Sprint, you don’t get charged extra, you don’t slow down.” Sprint will run the ads will run across TV (both broadcast and cable), print and online nationally. The new unlimited ads are an extension of the carrier’s “All. Together. Now.” tagline and ad campaign.AT&T last year implemented tiered pricing for its smartphone data services, and Verizon enacted a similar scheme last week; both carriers levy additional fees on customers who surpass their monthly data thresholds. T-Mobile USA doesn’t charge overage fees, but the carrier does throttle users’ data speeds down to an EDGE, or 2G, experience of around 100 Kbps or less when they go over their allotments.