Black Apple iPhone 4 on O2 - 32GB - Used - Good Condition - with original packaging and accessories ?

Having recently upgraded to the iPhone 5 I wanted to sell my iPhone 4 rather than leave it stuck in a draw. This is the black, 32GB version which has been upgraded to iOS6. I believe that it is locked to O2 but there are companies out there who can unlock it. It comes in the original boxing with headphones, sim key and charger (the charger is an after market charger as the original was damaged (by a pet :-)). If you have any questions or would like to make me an offer please call or text on 07841332566.