Iphone 4s 16gb three network ?

I have my perfect condition iphone 4s for sale. Comes boxed with all leads etc plus as extra a usb computer dock charger plus an extra long 3 meter charging cable. The phone has always been kept in a case so not a mark on it, it has a screen protector on also. I am located in grimsby and its collection please , feel free to call me anytime. 01472231579. Thank you