If it's "preparing to ship," unfortunately you cannot cancel. I was in the same position, but ultimately decided to pay for a store pickup and do a return of the original order (even though there isn't a UPS tracking # or anything). So I'll be out $2K until I get the phone and return it.
I almost did this but I knew my husband would have THOUGHTS about my inability to be patient. Again, I was stuck because I really want to be on the Verizon monthly plan. I didn't know if I could still do that if I returned the phone that had my # attached.
THANK YOU TO ALL FOR POSTING PICTURES! THE PHONE'S LOOK GREAT AND I'M EXCITED! Enjoy those beauts!