Step 1: Open Facebook’s app and press the hamburger icon. Step 2: Scroll down and select ‘See More’. Step 3: Press on the option of ‘Mobile top-up.’ This will take you on a page that says ‘Top up your pre-paid mobile on Facebook’. Step 4: Select ‘Top Up Now’ on this page. After this, you will have to give Facebook permission to make and manage phone calls. Step 5: Now, you will have to enter your mobile phone details. Once you enter your number, Facebook will automatically detect your operator. However, you can also change it in case it’s incorrect. When we tried changing our telecom operator, we could choose from options including Airtel, BSNL, Idea, Jio, MTNL Delhi, MTNL Mumbai, Tata DoCoMo, Telenor, and Vodafone. Step 6: Also enter the top up amount. You can also browse for plans to know which one will be the best option for you. Various categories included Special Tariff Voucher, Recommended, Top-up, Roaming, SMS, Full Talktime, among others. Step 7: Press on ‘Review order’ once you have entered all the information. Step 8: Now, the app will ask you to enter your credit/debit card number. Enter all the details and click on ‘Place Order.’ Step 9: You will now receive a One-Time-Password that you’ll have to enter in order to execute your recharge.