Apple iPhone 4 Black 16GB +

This item is an iPhone 4 16GB in Black, currently locked on the o2 network. The iphone is as brand new with no marks or scratches on it. I got it last week from o2 as a replacement for my old iPhone, thankfully it being insured and the only reason that I am selling it is because I am upgrading to the iPhone 5 If you have any question feel free to ask