HTC Sensation 16gb in perfect condtion plus £50 for iphone 4 .

Hi, I have my unlocked HTC sensation 16gb in great to perfect condition, with charger and data cable. Unfortunately i no longer have box. 8mp camera full 1080p video recorder, 4.3 inch screen, dual core processor etc etc.. Looking for a change and fancy iphone, if anyone interested please get in touch. Running latest andriod 4.0.3 would also add 50 to this