T-Mobile Plans Dual Mode Cell/Wi-Fi Phones?
U.S. mobile operator T-Mobile is apparently planning to introduce dual mode phones which can operate as normal cell phones and as VoIP phones when Wi-Fi access is present.

Source: Digital Trends
U.S. mobile operator T-Mobile is apparently planning to introduce dual mode phones which can operate as normal cell phones and as VoIP phones when Wi-Fi access is present.