The Sprint Galaxy S3 is already available for pre-order and it will be launched in just over a week from now, on June 21. For that matter, in addition to Sprint, Samsung’s 2012 flagship device will hit five more U.S. carriers this summer including Verizon, AT&T, T-Mobile, U.S. Cellular and C Spire.

In case you’re particularly interested in purchasing the device from Sprint, then you’ll be happy to hear that no less than 15 Galaxy S3 training videos for Sprint employees have been leaked, each one demoing certain features of the handset.

The videos, posted by Inside Sprint Now, are very short (45 to 80 seconds) but they each show you an interesting Galaxy S3 function including All Share, Dropbox, Group Cast, lock screen, S Beam, S Voice, picture sharing, Smart Gestures, Samsung TecTiles, and camera features.

Of the available videos, we’ll notice two of them, the ones that are detailing Smart Gestures and Samsung TecTiles. With Smart Gestures, users will be able to initiate certain Galaxy S3 actions on the handset by simply taking advantage of the gesture features the device supports. These gestures include Direct Call, Smart Alert, Shake to Update and can be customized in the phone’s settings app, which is also where you can get more details about the available gestures.

Samsung TecTiles is a new NFC-based sticker that Samsung will have in stores alongside other Galaxy S3 accessories. The sticker can be placed in various places (house, car, work) and can be used to automatically trigger certain actions or start certain apps on the Galaxy S3 when the phone is in NFC range.

While the videos have not been confirmed by either Sprint or Samsung, they certainly look genuine enough, and should prove to be quite helpful not only to Sprint staff training on the device but also to potential Galaxy S3 buyers, no matter what U.S. carrier they choose.

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