O1 ACCESS SPONSORSHIPS 1.1 The majority of access sponsorships are underwritten by A the carriers, which provide limited data and bandwidth for free. T A In some cases, this free data Either way, carriers have is used to gain a competitive an incentive to zero-rate product advantage, as T-Mobile in order to enhance their did with Binge On. In other cases, product, engage users fronting partners provide content who will eventually pay for for free but have agreements with services, and upsell existing the carriers not to charge for the subscribers more expensive ARRIER-SPONSOREDCCESS AND Dengagement, as is the case with data plans. C A Facebook’s Free Basics. 50