To activate Disney Plus on your Smart TV, start by turning on the TV and launching the Disney Plus app. Select "Log In" and note the activation code displayed on the screen. On a computer or mobile device, go to disneyplus.com/login/begin and enter the activation code. Follow the prompts to sign in with your Disney Plus account. Once successfully logged in, your Smart TV will refresh and display Disney Plus content. This process connects your Disney Plus account to your Smart TV, allowing you to enjoy your favorite shows and movies seamlessly.