I had my Qled TV series 7 connected to the SmartThings app.
I accidentally deleted device and now I can’t add it again.
when I go to add a new thing it asks to connect a hub, I don’t have a hub but it was working before.
When I installed the app, it automatically found the TV.
Well someone else can chime in. I don’t have iOS devices so no help there. To my knowledge the SmartThings app doesn’t work without a hub whereas Connect does, so unless ST app is pulling from Connect not sure how your TV was setup. My experience with Connect wrecked things so I’ve stayed away from it.