Apple Ipone 4 16gb Black! Working Order! Bargain! ?

iphone 4 16gb in working order except wifi option is greyed out, oher than that phone seems to works fine but aint sure, calls, messages, camera, all buttons, everthing works fine. locked to vodafone uk. any questions please ask im not looking for a quick sale, but i want good money for it. boxed with original charger, usb cable, manuals. no timewasters stricltly cash on collection, i wont deliver it anywhere. i will show it working to interested fellow. sold as seen, no returns.