Iphone 4s 32gb gr8 condition for sale or swap for samsung galaxy s3 sIII ?

Hi i have an iphone 4s 32gb for sale or swap for a samsung galaxy s3 new or verry good condition. I have had the iphone for about 3 months, its been in a hard case since ive had it an had a screen protector on it aswell since day 1 so its still in great condition like new. Comes with box and accessories and a new screen protector. Definatly on o2 but i think it mite be unlocked to all networks? 360 no offers please. Txt or call Rhian 07595496419