iPhone [Merged] iPhone Users with T-Mobile Service (USA)

[VroomGirl]

what firmware - TZones plan

Okay, I am a newbie. I have the original T-mobile Dash with the $5.99 plan. I want to go with the iphone, but get confused as to what firmware will work with the Tzones plan? I realize not all will work, so I need the best (easiest) to activate. I did the hacks myself on my Dash, and downloaded additional software, but am hoping this process will be a lot easier.
Am I correct that the 4.0 os will not work with T-Zones (wap)?

 

[shweta88]

Yes 3g is mainly used for activated without using a tmobile phone?



-------------------------------------------

 

[cmm]

I live in Boston and AT&Ts coverage sucks. And I'd love to save some money. I can live with EDGE/2G speeds for more reliable service. I rarely talk on the phone and really only need a a phone that allows me to surf the Internet and check and reply to emails.

So I went to the Harvard Square Tmobile store and wanted a data only plan but no luck. Instead, I saw a sign for unlimited talk, text and web for $45 (5GB at 4G, then slowed-- this isn't a consideration for iPhone users). I pay $90 a month at AT&T.

I want to jump on that deal. But I need to figure out how to unlock my phone. I started another thread but I was told there are downsides to unlocking my iPhone 3GS with a jailbroken iOS4.2.1 phone, which is what I have (05.15.04 baseband). The main downside--from what I can find--is no GPS.

Is there ANY way to change the baseband on my iPhone? Even if I go to an official iOS version, then jb to a favorable iOS version that changes my baseband, so I can unlock my iPhone and have access to the GPS?


Thanks!

PS: Will AT&T unlock my phone for me (my 2 year contract has run out and I haven't signed a new contract)...?