Smart View has now been incorporated into the SmartThings app. You should be able to connect your TV there and use Smart View from within the application.
I've been able to use Smart View directly from within some apps, like YouTube, after connecting my two TVs in the SmartThings app.
In fact, if I'm watching YouTube on my TV and pick up my phone, I get a notification asking me if I want to connect my phone to YouTube on my TV. If I do that, I can use my phone as a browser in YouTube while it plays on the TV, which allows me to add other YouTube videos to the cue, then I just sit and bing. I can also view the notes, like, etc, while the video plays on the TV.
