Stpes to activate youtube on smart tv and mobile phone follow the stpes.open YouTube app
Launch the YouTube app on your smart TV, streaming stick, or gaming console.

Go to Sign In
Select “Sign in” from the menu.

Get the code
A unique activation code will appear on your TV screen.

Open activation page
On your phone or computer, go to:
👉 youtube.com/activate

Sign in to your account
Enter your Google (Gmail) account details.

Enter the code
Type the code shown on your TV.

Confirm
Tap Allow / Continue — your TV will refresh and log in automatically.