That's because T-Mobile allows it. I mentioned specifically Verizon and AT&T for locking the features. I'm not sure how Sprint deals with the whole tethering.

That's because T-Mobile allows it. I mentioned specifically Verizon and AT&T for locking the features. I'm not sure how Sprint deals with the whole tethering. As far as we know T-Mobile is a lot more "customer friendly" since they're running 4th out of the big 4 Wireless provider in the US.