Apple iPhone 3GS - 32 GB - Black (O2) Smartphone ?

iPhone 3GS Black 32GB on O2 Used Phone comes in original box with original charger. This phone has some marks on the back of the case and screen, there is hairline crack near charger port on the back. I have restored the phone back to factory settings. THIS IS A SECOND HAND PHONE AND HAS NOT BEEN REFURBISHED THEREFORE COMES WITH NO GUARANTEE.