There are also USSD menus which I hadn't heard of before going to Asia. It was used by carriers there to provide an alternative to voice menus to topup and buy

There are also USSD menus which I hadn't heard of before going to Asia. It was used by carriers there to provide an alternative to voice menus to topup and buy addons. In India there is a company providing access to Facebook over it: https://www.facebook.com/notes/airtel_in/airtel-launches-the-worlds-first-ussd-based-facebook-access-service-in-india-fac/222601604418531 https://www.facebook.com/notes/airtel_in/airtel-launches-the...