Activate a BSNL SIM Card
BSNL is the largest telecom service provider in India that provides 2G/3G and 4G service in different fields like Data, voice, Broadband, DTH, and many more. 4G connectivity is available in few circles by BSNL; most of the people in India are still using 3G connectivity, which is the second-fastest cellular technology now.
If you are planning a trip to India for business or leisure, you can purchase a pre-paid SIM card and phone from BSNL to use. BSNL has its services all over India, so no matter where you are traveling, you will be able to make calls within the country as needed.