I'm looking to order an iPhone this weekend, but I have an excellent plan for $25 per month right now that I'd like to keep. I've read the tutorials on how to use my existing SIM, but people keep mentioning that iTunes 7.4 will not allow it to work. I have iTunes 7.3 still installed, and I don't plan on updating quite yet. If I order my iPhone and stay on iTunes 7.3, will I still be able to get my iPhone to work with my current SIM? After I do this, I'd upgrade to iTunes 7.4, since some people are saying that it will still work after an update. Does anyone know what will happen? I don't want to get my iPhone only to have no solutions. Will the software (I'll be using these steps) still allow me to do what I want? I think it should since it's still iTunes 7.3 that I have, but I don't know for sure.