Bharti Airtel has signed up 2.45 million mobile subscribers in May, taking its total to 167.1 million, data from an industry body showed.
Vodafone's Indian unit, which is the country's third-biggest mobile carrier, also added 2.45 million subscribers in May to have a total of 139.4 million, the Cellular Operators' Association of India said in a statement.
Fifth-ranked Idea Cellular gained 1.8 million mobile users in May to a total of 93.8 million.
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