State-run telecom operator BSNL plans to roll out its own 4G network, which will switch to 5G by June 2025.The 4G network will be developed indigenously and will not use equipment from any other provider.BSNL has already operationalized 38,300 sites and aims to roll out 1 Lakh sites by April-May next year.India has achieved the fastest 5G rollout in the world, covering 80% of the country's population.