Cannot unpair YouTube app on my smartphone from LGTV (SmartTV) I cannot unpair my Android smartphone YouTube app from my LGTV.  

On LGTV: I went on YouTube app and log-off my account. I also disconnected all mobile devices from it, what should (?) suffice in case my cell phone is stolen or something else happens, but...

On Phone: I cleared all app data and cache for YouTube app. But still, after starting the YouTube app, my LGTV is still registered and I can make YouTube videos play on LGTV.  

On YouTube account: I removed the LGTV from YouTube configuration, but still any account on the phone can make videos play on the LGTV.

There is something that is being left on my smartphone that still allows it to control the LGTV.

The next step (that I am holding) is: completely reset my phone and research some way to completely reset my LGTV (if it makes any difference).
I don't have a TV paired with my YouTube account, so this is really just another setting to look at. 


Go to your YouTube account: https://www.youtube.com/account
Click on the Connected TVs option at the bottom of the left hand menu.
If available, disconnect the TV from here.