[quote name='Guapo77']what is the $4.99 tzones plan?
I have Cingular as my carrier, but I do have a GSM phone, and I really don't feel like switching over (I don't pay because I am on a family plan, and if I do..well then I have to lol)[/quote]
the $4.99 tzones plan is tmobile's cheapest plan that allows access to the net. Of course, being a cell phone company, they make nothing easy. Since they want you to pay for the more expensive internet plans they disable the default web port, and make you go through a proxy to get web sites. they also block almost every port besides the bare essentials for mobile web and getting your email. That makes it so you have to specially configure your software to get on aim or to regular web sites, etc. The more expensive plans dont require this. I haven't tried ngage arena yet, it's possible it would work but most likely tmobile is going to want me to pay for a more expensive plan for that.
As Shadows916 said I believe that ngages are compatible with practically every cell network, except sprint(i think they use an entirely different setup from the others) so either the ngage will work with Cingular out of the box, or it will need to be unlocked. Chances are if you called cingular and explained your situation they would probably help out with that, or even called the company who the ngage is locked to.