Samsung has released a teaser video for the upcoming Galaxy S4, featuring the smartphone's young "secret messenger," Digital Spy said.

The online video introduces Jeremy, who will deliver the new flagship Galaxy S4 to its unveiling at an Unpacked 2013 launch event in New York City on March 14.

In the short film, the boy is driven in a Rolls Royce to an office, where he is handed a special package, presumably containing the Galaxy S4.

Upon opening the box, Jeremy's face is basked in the majestic glow of what is inside. He then takes the container home to keep it under wraps until the launch.

The Galaxy S4 is rumoured to have a 4.99-inch, 1080p HD screen capable of displaying 440 pixels per inch, along with an Exynos 5 Octa 8-core processor and a 13-megapixel camera.