Anyone know about iPhones and Tmobile? Please help..

Hi, does anyone here know about iphones and tmobile, or just unlocking them in general? I mean really know about it. Not just send me the link to a site they googled with my question. I would really appreciate some help from an expert! Thanks!

Hi, what do you need? Its first back it up, put restore, jailbreak, unlock. But - unlock depends on Modem Firmware and Model. Not all can be jailbroken untethered, and not all can be unlocked at this time. Need more infos.

for jailbreak i need to know:
iOS Version:
IPhone Model:

for unlock i need to know:
Baseband Number:
IPhone Model:

well you can unlock jailbreak iphone 2g,3g,3gs from your computer just installed itune for 2g best firmware is 3.1.3 Turn off your device press menu button and put cable your set will goes to recovery mod open itune and you will see your set in recovery mode just press shift button and open the destination file where you downloaded the 3.1.3 when the restoring is comlete. Just jailbreak your 2g with redsnow the one i mentioned. Same process for 3g 3gs you just need 4.1 firmware for 3g 3gs and redsnow for 4.1 firmware follow the instructions update your baseband to 6.15 and 6.15 is ipad baseband. Just put repo666.ultrasn0w.com installed this source from cydia and your set 3g, 3gs will be unlocked.

for 4g if you need factory unlocking you just need to know about your network it will be in setting general about check it. There are many online websites unlocking many networks like o2,t-mobile,vodafone,orange etc.

Cool. So I have an iphone 4 running 4.3.5, BB 4.10.01, which I know can only be unlocked with a gevey sim, which I have no interest in doing. My questions are:

1. Can I downgrade my iOS to 4.3.3, or lower? If so, can I do that without an ATT sim card?
2. Can I upgrade to iOS 5 (also without ATT sim card)? and then just wait for the unlock?
3. Can MMS and data be configured on any of these for Tmobile?

Thanks again.

I also want it jailbroken. Not sure if that comes with unlock or vice versa.

Don't upgrade to new version 5. Because may be gevey sim will not work in new update. Don't you know your mobile is factory unlock. If you wish to downgrade your cell phone you need shsh blobs for the previous version like 4.3.3. If the blobs are saved. You may get it using ifaith download it from the net and check shshblobs is saved for any old version than you can downgrade it. But remember you can't downgrade baseband it will be still 4.10 not downgraded. But if you have shsh blobs then you can downgrade and you can jailbreak your iphone without problems of thethred jailbreak

i have a connect for authentic factory unlocked iphones. it is best if they are factory unlocked because they will not lock back up when you use itunes and you can do upgrades. if anyone is interested hit me up