Snapchat has their unique way of keeping their users entertained through their app. They have incorporated a lot of features such as maintaining snap streaks with your friends, clicking photos using exciting lenses and filters and many more. If you find a purple circle with a lock around your friend’s Bitmoji then it means that your friend has uploaded a snap story only for the close friends and you are included in the close friends list of your friend.
For More Read:- https://allinsider.net/what-does-the-purple-circle-mean-on-snapchat/
For More Read:- https://allinsider.net/what-does-the-purple-circle-mean-on-snapchat/