Check whether their profile, posts, or stories are no longer visible to you
Try searching for their account from a different account or logged-out browser
See if your past messages still show a profile picture, name, or status
Try sending a message and note whether it goes through or stays unsent
Look for missing read receipts, last seen, or online status
Check whether you can tag, mention, or add them
See if their comments, likes, or interactions have disappeared from your view
Try calling them through the app and see if the call connects
Compare what you see on your account with what a mutual friend sees
Check whether you can still follow, friend, or add them again