Personally, I wouldnt have picked up from an online add for an iphone. There are a ton of scams out there. Sorry to hear you got trapped into it. I think the previous responses are on target, - Do a claim through however you made payment. Crecit card, bank or paypal. Do a complaint through them, paypal will easily do a reversal if they find him in default.
Honestly going through courts half the time is going to cost your more then the scammer can pay. So hope you paid with something like paypal or credit card so you can get a charge back.
But good luck with what ever you do
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