APPLE IPHONE 4 16gb, BLACK, UNLOCKED TO ALL NET WORKS ?

FOR SALE A USED IPHONE 4 16 GB IN BLACK, OPEN TO ALL NET WORKS, I HAVE USED IT ON VODAPHONE, O2, 3, T-MOBILE AND ORANGE. HARDLY ANY SCRATCHES ON FRONT AND BACK- HAS HAD SCREEN PROTECTOR ON ALL ITS LIFE, BEEN KEPT IN BRILLIANT CONDITION. COMES BOXED WITH USB, WALL CHARGER, HEAD PHONES, MANUAL AND BOX. SELLING AS I AM DUE FOR AN UPGRADE. ***PLEASE NO TIME WASTERS AND NO OFFERS***