Vodafone is a British telecommunications company founded in 1991 with headquarters in London. Bharti Airtel is an Indian telecom company founded in 1995 based in New Delhi with over 386 million subscribers globally. Reliance Jio is an Indian LTE operator founded in 2007 as a subsidiary of Reliance Industries based in Navi Mumbai, and is India's largest internet service provider. A survey was conducted rating Vodafone, Airtel, and Jio on preferences for SIM cards based on network quality, availability, service, schemes, and postpaid/prepaid plans. Jio was most preferred for SIM cards but had poor network quality, while Airtel provided best service and had