WiFi on the phone has too many issues - cost, battery drain and QoS. Femtocell actually increases battery life, is backward compatible with all the legacy phones, and QoS is part of the air interface. Operators have launched FMC with WiFi in many parts of the world. Can you name a single one that was successful? Femto is the future. It makes a ton of sense for the operators (reduced CapEx, opEx), and it makes a ton of sense for the users (legacy phone support, good coverage, reduced cost).
Airvana Touts Femto-Aware Devices [View article]