I order mine, I just put in some random information and used my $500 credit limit card for that $1 charge. If don't return the phone I wonder how they will go after me.
Thats not how a credit hold works. You would see a pending but not completed transaction that would reduce the available credit. In your case your card would be declined.
That's not how this promotion works. My card was charged $1.00. My available credit has been reduced by $1.00. A better response to the above user's comment is, how do you expect to receive your phone if you just put in random info? They need a verified shipping and billing address. Then if you don't return the phone, they either charge your card, likely putting you over your available balance by several hundred dollars or send your info to collections.