1 First, tap the profile image on the bottom right of the screen (looks like a contact card), then select “Find Friends”. 2  You can search to see if your Facebook and Twitter friends are using Instagram, as well as search friends from your phone’s Contact List. You can search to see if your Facebook and Twitter friends are using Instagram, as well as search friends from your phone’s Contact List. ( 2 This will help you find the friends you are already connected with on Facebook and Twitter.).