Opt Out Of AT&T and Verizon Cell Phone Tracking and Selling Your Info To Advertisers. AT&T will soon, and Verizon already does, begin selling the private usage data it collects from its subscribers’ phones to advertisers. The data anonymized, according to the companies, but it includes very sensitive information such as customers’ locations, Web browsing history, mobile app usage and more. You can easily opt out of these programs by following the links below: