The device was revealed ahead of its heavily-rumoured official unveiling at the Galaxy Unpacked event on 11 February.
The first-look focused on the smartphone's ability to sit at a 90-degree angle during video calls.
It also noted that the presence of a "small crease" on the screen was a "normal characteristic".
The surprise advert confirmed that previously leaked renders of the device were mostly accurate.
The smartphone was shown off in two colours - black and purple - and appeared to feature a smaller outer screen on its shell, which will display notifications.