so I was sitting behind a girl on the plane and I was her on her phone as she was a really big teen yop fan. so I saw her do the unlocky thing ( the pattern ) normally when you do the pattern it just comes up with grey circles but with her phone THE HEAD WAS CHANGJO. LIKE WHAT. SO INSTEAD OF THE CIRCLES IT WAS CHANGJO'S HEAD. OMG GUYS. HOWWWWWWWWWWW? OMG IT WAS AMAZING ♡