Looks like T-Mobile isn’t just claiming that they have the largest 4G network in the good ole US of A, even thought technically their HSPA+ network isn’t 4G, T-Mobile is now claiming that the Samsung Galaxy S 4G is the fastest phone running on the 4G network.

T-Mobile makes the claims in their latest promotions video for introducing the Samsung Galaxy S 4G, which we have for your viewing pleasure below courtesy of the guys over at Daily Mobile and by way of the T-Mobile YouTube page.

The video last the usual slot for a promo video and features the T-Mobile girl and someone who is apparently a blogger who’s impressed with the Android 2.2 Froyo running smartphone that also comes with a copy of Inception preloaded.

According to the Daily Mobile article the reason the Samsung Galaxy S 4G is T-Mobile’s fastest device on their network is because the device offers 21+ Mbps speeds while previous smartphones such as the T-Mobile myTouch 4G and T-Mobile G2 are both limited to 12.4 Mbps speeds.

Anyway, for those who may be considering picking up the Samsung Galaxy S 4G, head on down, hit that play button and check out T-mobile’s intro for the device…enjoy.