This document summarizes a study on how Airtel can gain market share through mobile number portability (MNP) in India. It provides an introduction to MNP and Airtel's company profile. The objectives are to analyze Airtel's tariffs and attract more users. Through a survey of 50 Airtel customers and retailers in Noida, the findings show that Airtel's network and service are good but tariffs need to be more competitive. It recommends that Airtel focus on network issues, increase trade schemes, and offer cheaper tariffs to gain more MNP customers.