With 5G technology, Indian service providers have got ample of opportunities. Many experts believe that India has fastest large-scale deployment of 5G infrastructure in the world.
First Jio or Airtel started with OpenRAN architecture - where hardware is kept compatible with other softwares too (like you bought HP laptop, which comes with Windows, but you uninstalled it, and installed Ubuntu Linux).
BSNL 5G by mid-2024
State owned operator BSNL did not depend on Chinese vendors (Huawei and ZTE) for 4G roll out - the contract went to Tata Consultancy Services led consortium. The advanced purchase order (APO) for deployment of 4G network across India on behalf of BSNL is valued over Rs 15,000 crore. The consortium includes government-owned Centre for Development of Telematics (C-DoT) and Tata Group owned Tejas Networks. BSNL's West Zone's 4G deployment will be done by Central govt. backed ITI. This contract is worth ₹3,889 crore. India's telecom minister Ashwini Vaishnaw, by the end of May, announced that BSNL 4G will go live in 2 months, and 5G upgrade will be started in November-December of 2023, and 5G from BSNL will go masses by March 2024 - which I personally believe unachievable. BSNL may launch 4G commercially at Q4 of 2023, and that home made 4G-5G stack BSNL is deploying will be upgraded to 5G/NR by middle of 2024.