Issue paying videos on Samsung Galaxy S iii

[M. Hossein Amerkashi]

I'm able to play videos on my HTC EVO. However, when I try the same exact videos on Samsung Galaxy Siii, I get message that it can't play the video! But when I turn its WiFi on and connect to WiFi, then it works!

Any input on this? I really would like to be able to use 3G network for playing the videos not the WiFi.

THANKS