Comcast, AT&T, and T-Mobile USA received a letter from the FCC asking them to answer questions about their use of “zero rating,” by which some types of content are exempted from a customer’s data cap. Though FCC Chairman Tom Wheeler insisted this doesn’t constitute an investigation, the FCC has previously noted that data cap exemptions can favor the exempted content over content that counts against a customer’s data use. The FCC asked the companies’ technical and business personnel to be available for discussions by January 15. Continue reading FCC Queries Comcast, AT&T and T-Mobile About Data Caps