A look at telecom industry’s top carriers ahead of India’s second 5G spectrum sale

India’s second 5G spectrum sale — the telecom industry’s most watched event — starts June 25. Top carriers, Reliance Jio, Bharti Airtel and Vodafone Idea (Vi) will bid for 5G airwaves. But just how long is the auction likely to last and how much spectrum can the government hope to sell this time?