Verizon, AT&T, and T-Mobile all have programs that collect additional data, like app usage and web history, on their customers, and they are generally opt-out (Emma Roth/The Verge)

Emma Roth / The Verge:
Verizon, AT&T, and T-Mobile all have programs that collect additional data, like app usage and web history, on their customers, and they are generally opt-out  —  Verizon says it's to better “understand your interests”  —  The My Verizon app might be collecting information about your browsing history …