Activate a BSNL SIM Card
BSNL is one of the largest telecom service providers in India that provides 2G/3G and 4G service in different fields like Data, voice, Broadband, DTH, etc.. Though 4G connectivity is available in few circles by BSNL, most of the people in India are using 3G connectivity which is 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 service all over India, so no matter where you are traveling, you will be able to make calls within the country as needed.