Apple has introduced a new wave of teen-focused advertising in the US.

Designed to boost awareness and sales of the iPhone, the ads, 'Facebook' and 'Cars' both aim to promote the device's innate ability to browse the Web.

Facebook tells addicts of the social networking service: "If you love Facebook so much that you check it every time you're near the computer, just think about how great it would be to check it, well, every time you're nowhere near the computer."

Cars meanwhile shows viewers how to use the iPhone to compare prices on models when a user is buying a new car.

"Say you're out shopping for a car, and the salesman says, 'this is the best deal in town, guaranteed.' Sounds good," the narrator says. "But say you want a second opinion. That's when having the entire internet on your phone sounds even better."