iPhone 4s 16gb factory unlocked ?

Black iPhone 4s 16gb Brilliant condition, owned for three months and has been kept in a case at all times along with screen protectors on the back and front since the day of purchase. The case will also be provided. Also comes with the original box, its contents which includes the charger. The phone is factory unlocked and as such can be used on any network. Collection only from Colchester, cash on collection.