help with stolen phone?

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http://androidforums.com – my friend got robbed at gunpoint. they took his s3. its still activated on the line and is ringing. i tried android lost it works on my sisters phone when i tested it but didnt work on his. im guessing they did a factory reset. he doesnt have insurance unfortunately. stupid not to have it on a $500 phone is there anyway i can get metro to give me the general location?? or anyway to find what google account is on the phone? anything at all? (General)