[Prime]

I'm going to keep this short and sweet. I don't spoonfeed my methods

First, get an IMEI. I got mine by emailing some people from craigslist.
Call in under a fake alias with real address and say your phone is broken. Use your own excuse.
If they ask for serial, etc, say you only have the IMEI.
They're gonna ask you to send in the phone, box them.

Have fun.