I don't know how many people this may affect, but if you managed to score a preorder for launch day, while also being able to reserve an iPhone 4 at your local Apple store as a backup method or for extra devices to snag, you may be cringe at this thought: it may be in your best interest to NOT activate your iPhone right away when you receive it in the mail first. This goes especially if you're on a Family Plan, wanted multiple devices, or have different lines with different eligibility requirements. Your first priority is to get the iPhone. If you're working during the day, you're likely to receive it at work, or it may be waiting for you when you get home. If you're going to be home that day, going to the store in the morning first to grab your reserve could be risky that you may miss your package arriving at home, so you're likely to wait for the incoming package first. Trust me, the hardest part is actually getting the iPhone. Activating your shipped iPhone may mess up the eligibility and pricing when you go to pick up your reservation. If you don't touch the mailed iPhone, there's likely been no other change in your account since you preordered it. So, if you check your eligibility on your carrier's website or network by calling *639# (or whatever star code they use), it should give you a heads up on what to expect when you go to the Apple store. Activation will likely be problematic during the day. If you're at all familiar with the previous launches, it's best to do it in the comfort of your own home, when you have all your iPhones in your possession, you're nicely settled down, you're not with anyone who needs to leave the store or mall, and you're away from all the chaos. There's no rush at this point - you have the device already. Of course, this might not be possible if you're forced to activate it in the Apple store. Then again, that's why it's important not to set up the iPhone you received in the mail first. Hope this helps out.