[katguinn]

I have an unlocked i-phone 3. I purchased a sim from straight talk and managed to unlock the phone using unlockit.co.nz. But the phone does not want to send pic messages and the 3g data internet does not work, I can only browse when using wifi. Is this because I need to jailbreak the phone, or is this another issue? Is thebigboss.org a good site to trust to help me jailbreak my phone?
Also, how do I find out which firmware vs I am using? Hep meh plz!