Like maybe most of you, I will be pre-ordering tonight (Xs Max Gold). And its not a secret, with the exception of last year, the Apple Store app is generally the fastest way to preorder. I've personally already been approved for the upgrade thru the iUp program. But their is still another setting that can help you checkout even faster. We all know every click/every second matters. I haven't seen anyone recommend this, so this will definitely help most of you out. If you go to the apple store app, click on the profile picture at the top right. Scroll down to the bottom. Hit settings, and turn on remember me. If you turn that on, the apple store app will remember your carrier verification settings. (Phone Number, billing zip code, account passcode, etc). so that tonight when its time to preorder, you won't have to enter the information. Saving you a few seconds in the preorder process.