Sorry guy's and girl's, i found a step by step earlier and can't find it now I have a iphone 3g on vesion 4.2.1 and modem firmware 05.15.04. I need to unlock it to switch providers. I guess i need to jailbreak and unlock. can some one help me with the info. My head is sore from reading so much, just got confused and nervous. Oh and a question, does the sim card need to be removed before i begin, this is one thing i never read. thanks for the help. A trusted link would be appreciated