Mamata launched the 'Jionet' brand Wi-Fi service.
Bhupendra Kumar Modi is the founder of $2-billion Spice Group.
India's telecom sector has been through dizzying peaks, troughs, policy U-turns, court battles, brutal competition, and daily controversies. India could go back to a private sector duopoly with just Reliance Jio and Bharti Airtel surviving the mayhem. The third player, Vodafone Idea, could be history.