sentences:  On 1 May 2007, Jersey Airtel and Guernsey Airtel, both wholly owned subsidiaries of the Bharti Group, announced they would launch mobile services in the British Crown Dependency islands of Jersey and Guernsey under the brand name Airtel-Vodafone after signing an agreement with Vodafone.Airtel-Vodafone operates a 3G network in Jersey and Guernsey.Bharti Airtel has about 303.08 million subscribers worldwide—264.58 million in India and South Asia and 50.949 million in Africa as of December 2011.