Tata DOCOMO is part of the Indian conglomerate Tata Group. The company received the license to operate GSM services in nineteen telecom circles and was allotted spectrum in eighteen of these circles and launched GSM services on 24 June 2009. It began operations first in South India and currently operates GSM services in eighteen of twenty two telecom circles. It has licences to operate in Delhi but has not been allocated spectrum from the Government. Docomo provides services throughout India. Tata DOCOMO offers both prepaid and postpaid cellular phone services. It has become very popular with its one-second pulse especially in semi-urban and rural areas. In November 2008, NTT Docomo invested $2.2 billion in Tata Teleservices, at ₹117 a share for a 26.5% stake in the latter. DoCoMo, TTSL and Tata Sons had in March 2009 signed shareholder agreement for the business alliance. In March 2009, DoCoMo acquired a 27.31% in Tata Teleservices for Rs 12,924 crore and 20.25% in Tata Teleservices (Maharashtra) Ltd, the listed arm of TTSL, for ₹949 crore. Overall, DoCoMo holds 26.5%in Tata Teleservices. On 5 November 2010, Tata DOCOMO became the first private sector telecom company to launch 3G services in India. Tata DOCOMO had about 42.34 million users at the end of December 2010. In April 2011, Tata DOCOMO signed Bollywood actor Ranbir Kapoor as its brand ambassador on a three-year contract, now the contract is expired. For the southern states of Tamil Nadu and Andhra Pradesh, actors Vijay and Ram Charan Teja are the brand ambassadors respectively. Rebranding On 20 October 2011, the Tata Group brought its brands – Indicom (CDMA), Tata Docomo (GSM), Walky (Fixed Wireless Phone), Photon, INTERNET – under the Tata DOCOMO name. All subscribers to these services were migrated to the Docomo brand on 20 October 2011. In 2015, Virgin Mobile - the other brand under Tata Group was also merged with Tata Docomo. T24 is not part of the rebranding and continue to retain their names. NTT DOCOMO exit According to the agreement between the Tata Group and NTT Docomo, the latter had the right to sell its stake if Tata Docomo missed performance targets, with Tata getting right of first refusal. On 25 April 2014, NTT Docomo had announced that they would sell all of their shares in Tata DoCoMo and exit the Indian telecom industry as they had incurred a total loss of $1.3 billion. Under the joint venture agreement between the two groups, NTT Docomo would either increase its stake from 26.5% to 51%, or sell all of its shares, depending on the performance of Tata Docomo in the Indian market. Since Tata was unable to find a buyer for the shares, they sought the approval of the RBI, in November 2014, to buy back the shares from NTT Docomo for $1.1 billion (at ₹58.045 per share), half the price paid by them in 2009. The RBI had approved the deal in January 2015, but however, went back on their decision and rejected the deal in March 2015, citing FEMA regulations. Following the RBI decision, the Tata Group offered to purchase Docomo's stake at ₹23.34 a share on the basis of a fair market value determined on 30 June 2014 by PwC. NTT Docomo then moved the London Court of International Arbitration seeking a valuation of ₹58 a share.