Well today has been the day from hell regarding my iPhone. So I returned my iPhone 4 back to Apple as I wasn't happy with my particular phone, I'll definitely get one again in the future but perhaps after they're available and the issues have been worked out a bit. Anyway, returning my iPhone 4 has lead me back to downgrading to my original iPhone 2g. So here's the deal. I went to AT&T and got a replacement sim card so I can reactivate my original iPhone however, my iPhone is now rejecting the sim card pretty much bricking the phone. So I reinstalled the original sim card (the one the iPhone came with) and it comes back to life but I don't get any service because the original sim card has been deactivated. AT&T says they can't reactivate deactivated sim cards and that leads me back to using only the live sim card. But every time I use the live sim card, my iPhone is rejecting it, even after connecting my iPhone to iTunes. At this point, I'm thinking that the only fix is to jailbreak/sim unlock my original iPhone 2g. Now before I go ahead and unlock my iPhone, does anyone have any other ideas as to what I can possibly do or any idea what's going on?