Apple iPhone 4 16G Excellent condition Unlocked all networks +

Apple iPhone 4 16g Black, with charger Excellent condition I have upgraded to the 4s hence selling this one as i have come to the end of my contract with o2. This is currently locked to o2 but they are in the process of unlocking it to all networks (within next 24hours). Unlike others this will come with a certificate of authenticity, which show it has never been stolen, blocked or refurbed . Cash on collection only will not post.