Uh-oh
The reason I use T-Mobile's network is the existence of Web and Walk Plus, which guarantees that I can use SSH, etc from my phone. Now that they've only got one level of net access, who's betting that it's the usual shite you get from mobile networks, with everything blocked except what good boys and girls use?
Serious question: which mobile networks allow you to use SSH/FTP from a phone? I've already asked the networks, and got various degrees of "uuhhhhh...dunno."