Tata Teleservices, which as per the telecom regulator has a 3.5% share of wireless customers with 42.09mn users as of July, has been making losses and currently has a debt of around Rs 30K-cr. NEW DELHI: The Tata Group informed the government on Friday that it plans to shut its wireless business, bringing an end to its 21-year-old phone services venture. Tata group chief financial officer Saurabh Agrawal and Tata Teleservices managing director N Srinath were among executives who met Department of Telecommunications (DoT) officials and discussed ways of surrendering or selling their existing spectrum holdings, some of which have been allocated administratively by the government and some of which have been bought through spectrum sales over the last few years. Tata Teleservices is the telecom unit of the Tata Group. “They wanted to inform informally that they want to close down the business, write off (losses). They will start the process within this month,” sa...