Here are some of the steps to find your Vodafone Idea number easily. Step 1: Open the Phone or Dialer application on your Android or iOS device. Step 2: Dial "199# from your registered Vodafone Idea mobile number. Step 3: A flash message showing your Vi mobile number will appear on your smartphone. Struggling to remember your VI (Vodafone Idea) SIM number ? Here are easy methods to check your VI mobile number . There are various ways to know the VI number on your phone. Of course, you can always call your friends and family to check VI number . But, if you don’t want to do that, the below listed methods can come to your rescue. Explore five different ways to check your Vodafone Idea phone number here. Learn how to find your Vi mobile number using USSD codes, app, customer care, settings and more. This article provides detailed instructions and tips for checking your Vi number instantly.