On their mobile network so they are not breaking the laws I guess.
Developers who want to optimize their app for Verizon's network will soon have a new option, a "turbocharge" API that temporarily help an app get priority access to faster and more reliable data. The funcitonality would theoretically come by way of a "turbo" button that developers could add to their app, which users would also be tied to another API Verizon is developing — for micropayments. In practice, that would mean that if an app was slow, users could hit the "turbocharge" button, pay Verizon a fee, and get more reliable data.
Verizon to offer data 'Turbo' API to developers, fees to users - Readability
Developers who want to optimize their app for Verizon's network will soon have a new option, a "turbocharge" API that temporarily help an app get priority access to faster and more reliable data. The funcitonality would theoretically come by way of a "turbo" button that developers could add to their app, which users would also be tied to another API Verizon is developing — for micropayments. In practice, that would mean that if an app was slow, users could hit the "turbocharge" button, pay Verizon a fee, and get more reliable data.
Verizon to offer data 'Turbo' API to developers, fees to users - Readability