This is a request from @Blizz-draws!

What they would do.

John: *would take videos of his cats*

Paul: *would take videos of himself singing duets of his own songs with random strangers*

George: *would film his garden*

Ringo: *would get confused*

What they would say.

John: Smile for the camera, Jesus! Oh, isn't he cute? Oh, oh, ew. Uh, he's coughing up a hairball. Let's just turn the camera somewhere else to give him some privacy.

Paul: *walks up a stranger on the sidewalk* Hello, sir. As you probably know I'm Paul McCartney. I'm filming a new music video with this snazzy little app and you're going to sing with me. Let's go. Well, you just have seen me with a poker man. I had a honey and I bet a grand. Just in the nick of time I looked at his hand.

George: Here are my petunias. They're enjoying the sunlight. And here are my succulents. There's my gnome Harold. Hey, Harold, how's it going?

Ringo: Where's the "on" button on this thing? *stares into camera while its filming* Is this on? Am I filming? *turns phone upside down and studies it* Hello? Anyone there?