Research estimates that only 17-18% of wireless data is actually consumed while in transit. The majority of data is consumed at home, office or semi-stationary locales like restaurants, cafes, parks etc.
Smartphones and tablets are generally capable of accessing both networks – cellular and WiFi. With the proliferation of smartphones, the WiFi industry is developing a new network standard (Hotspot 2.0), which would alleviate much of the log-in and authentication