I've had trouble in the past logging on with my Tmobile android. The last time the SC agent called the Tmobile help line, and they gave me a temp username and password and I was able to log on.

The help line tech also suggested I download the Tmobile Hotspot app from the market. Turns out that if you have a data plan with them, you get free hotspot access for your phone. Installed the app, and now my phone automatically logs into the SC wifi... or any other Tmobile hotspot. Very handy.

Hope this helps...