Learn the MNP online process to switch to Airtel postpaid and keep your existing phone number. Find out the benefits, eligibility criteria, and steps to port your number to Airtel postpaid easily. Airtel is one of the largest telecom providers in the country. We have put together a step-by-step guide on how to port your existing Jio number to Airtel prepaid or postpaid service. When you move from Jio to Airtel with Mobile Number Portability (MNP), there is no reason you will have to change your number. In this guide, we can provide you with a detailed overview of the whole process step by step to help you get through it easily. 1. Determine Eligibility. Before starting, check that you meet the basic requirements: We have outlined the complete process of Jio to Airtel port via the official website and how users can do so with or without an SMS request.