I am NOT asking to jailbreak or unlock, I know how to do those things. I recently got a swap at the Apple Store from my old iPhone (jb/ul) (but they didn't know that) to a brand new, never used iPhone. I can not do anything with this until I activate it though iTunes. It requires me to have a valid ATT sim card which I do not have because I have TMobile. I do not have a Mac and after 2 and a half days of searching for the solution, I have given up. I just need to know how to ACTIVATE it, NOT JAILBREAK OR UNLOCK. Thank you.