Bharti Airtel plans to completely acquire 100% of Wireless Business Services (WBS), the Indian 4G unit of US chipmaker Qualcomm, by the end of next year, the Economic Times quotes Airtel’s CFO Sarvjit Singh Dhillon as saying. Airtel purchased 49% of the company in May 2012, before increasing its stake to 51% in July 2013. WBS holds Long Term Evolution (LTE)-suitable spectrum in Delhi, Haryana, Mumbai and Kerala. In related news, the Mobile Indian writes that Airtel has begun testing its LTE network in Delhi and is expected to open the network to the public shortly. According to TeleGeography’s GlobalComms Database, to date Airtel has activated 4G networks in Kolkata, Pune, Bangalore, Chandigarh, Mohali and Panchkula.