samsung galaxy s2 for sale or swap ?

White samsung galaxy s2 on o2 network for sale. Its 16gb and has a 8mp camera with flash and zoom,etc.. comes with box and usb lead. It is a great anroid phone but I prefer the iPhone so im going back to an iphone 4 or 4s. If you have one for swap let me know, must be on o2 or unlocked. If its a 4s il add 30 cash your way. txt me on 0753403151 thanks.