That looks like the default theme with a t-mobile logo. Goto the options>>Settings>>themes and load up the default theme. It should look just like that but without the tmobile logo. I'm using it right now and like it better than the default tmobile theme.
Im also still trying to figure out howto delete 'enterprise activation' from the main screen :-/ but i only had the device for 2 days. Mines a 7105t but i think they are very similair.