Originally Posted by affenzeit
I think it's only included with the unlimited data plan, so if you have the 2GB plan, you'll need another option.
I don't have T-Mobile, but with Verizon if you have a limited data plan, the FCC says they HAVE to give you tethering included.
Free tethering and unlimited data doesn't seems like something a carrier would do.
Check with tmobiles website to be sure