Three years after spinning off its mmO2 subsidiary, BT (NYSE:BT) launched a new mobile service. The MVNO service, dubbed BT Mobile, offers a range of enterprise mobile services. The introduction is part of the company's new network agreement with Vodafone. BT Mobile will therefore act as "virtual network provider" with its customers' calls being carried over Vodafone's network.

The new agreement should supercede any prior arrangements, including former deals with mmO2 (allowing the telco to offer BT enterprise customers airtime on the O2 network) and T-Mobile (a deal geared towards consumer subscribers).    The 305 k existing wireless customers will be transferred to the new BT Mobile service within the next few months.  There are plans for plans for a combined mobile and fixed-line phone service.  BT also announced its plans to hold a wireless broadband WiMAX trial sometime next year.