Hi all, Im a brandnewbie here to iphone. I read some and just want to ask. Im buying a phone, should I buy one with the 2.2.1 os or look for the older os? If it has 2.2.1, is that means it cannot be unlocked now? A guy tried to sell me a phone with 2.2.1 and it is unlocked because it took my tmobile sim. You can jailbreak 2.2.1 now right? Kinda confuse thanks for your help.