There may be another recourse if you cannot contact the original owner or get the
Apple ID and ownership issues resolved; providing you bought in good faith, the
product from a business, and it turns out you cannot tell if the item was legal or not
for the business to resell, they should give your money back & accept it as a return.
You should check into the legality of this thinking, in your country, as consumer law
may protect you from misrepresentation or unfitness of merchantability, in fact. Each
region or country has its own laws that should protect retail buyers, especially from
second-hand stores or pawn shops. However the results may vary by jurisdiction.
According to the SN info, some details that may or not be of interest, follow a lookup:
Nice Name: iPhone 4 (GSM)
Machine Model: iPhone3,1
ModelCode: iphone_4
Family name: A1332
Model Number: MC318
Group1: iPhone
Group2:
Generation: 4
CPU speed: 1.0GHz
Screen size: 3.5 inch
Screen resolution: 960x640 pixels
Colour: Black
Production week : -33- (August)
Production year : -2010-
Production number: 2605 (within this week)
Model introduced: -2010-
Capacity: 16GB
Memory - flavour: xx
Factory: 84 (Shenzhen, China)
External link: Repair guide by iFixit
info per
http://www.chipmunk.nl/klantenservice/applemodel.html
http://www.chipmunk.nl/cgi-fast/applemodel.cgi
Hopefully you can resolve the issue, in one way or another: to get it working or a refund. 😐