I'm planning to upgrade one of the lines on my AT&T Mobile Value Share plan to the new iPhone. If I pre-order directly from Apple, will the phone be shipped to me with the AT&T SIM included so I can activate it at home? Or will I have to take the phone to an AT&T store to get the SIM and get it activated? I've always ordered my phones directly from AT&T and they always come ready to go, but this is my first time pre-ordering an iPhone and I've read it's best to order from the Apple Store app. Just want to be sure the phone will come with the SIM.