PM Narendra Modi unveiled BSNL's fully-indigenous 4G network stack on Saturday. The new cloud-based 'swadeshi' 4G stack is designed to be future-ready and seamless, upgradable to 5G. Over 26,700 unconnected villages in remote, border and left-wing extremism-affected areas will receive connection with this launch. The BSNL towers are spread across Odisha, UP, Rajasthan, Assam, Gujarat and Bihar.