Reliance Jio has written to Cellular Operators Association of India (COAI), warning it of legal action for sending a mail to the government against its interests. COAI, of which Reliance Jio is a member, on Monday, wrote to the government stating that 2.5 million users for Reliance Jio constituted a commercial start, to counter the company’s claim that it was testing its network to offer superior services later. “Prior to your email, Reliance Jio was not contacted , as regards the intent or the contents of your attached letters to receive its views or comments,” according to the letter.