Hello! I've never preordered an iPhone before, and I was wondering how it works through the Verizon website. I have an upgrade available on my account, and I was wondering if in the past preorders have been available at the same time as they're available on the apple website. Also, have past preorders been received day of availability? If not, is it possible for me to upgrade my phone on the apple website (even though the upgrade I'm using is from a different phone on the account)?