Search their username in Instagram
Check whether their profile appears in search results
Open their profile from an old DM, tag, or comment
Look for a message saying the account is unavailable or not found
Check whether their posts, followers, and following counts are hidden or unavailable
Try viewing their profile while logged out or from another account
See whether their likes or comments on your posts have disappeared
Check whether you can still tag or mention them
Look for missing chat history or inability to send new messages
Compare results with a mutual friend’s account
Use Instagram’s block indicators, such as no profile photo, no posts, and no follow button
Confirm by searching from another account if the profile is visible there but not on yours