If you didn't preserve baseband then there us no unlock at the moment Hopefully soon.
T-mob does not seem to care that you use an iphone,,, I have a family plan with them and have four iphones on it. Their tech support even has iphone support. Slight drawback is that only Edge works on Tmo, their 3g freq is different than what the iphone can receive and visual voicemail usually does not work... but four iphones with unlimited messaging, data, and 3000 minutes talk shared is ~$200/month.
Do you know what the cheapest data plan I need to purchase is for a single line?
How much slower is Edge versus 3G?
for these sort of questions head to http://www.howardforums.com they talk about carriers and such
If you have updated your phones software to 4.1 or 2 or 3 then you also updated your baseband and cannot unlock your phone.
Check iclarified.com for unlock steps and updates but for now youre stuck
And also dont let them try to sell you the $25 data plan. Go with the $9.99 plan.
Thanks. This is what I was looking for. Will Tmobile have 3G for the iPhone in the next 8 months?