apple Iphone 4 16gb in black on o2 possibly unlocked read ad less than a year old +

apple iphone 4 16gb in black, i am on o2 but this was an insurance replacement so have been advised it is likely to be unlocked as they do not know what network i am on when sending out the replacement but i can not confirm this. it is less than a year old. always had covers on so no scratches to back or front great condition. comes with box, charger (which is also the lead to connect to a usb), unused headphones, little pick that removes sim holder, 2 zebra print plastic covers, 1 teal coloured leather look full case that folds however the flap that keeos it shut has some marks on it but no marks on front or back of this case. Also comes with 2 front screen protectors. please email as i cant answer my phone at work but i can pick up emails at any time any questions please ask