Swapping my galaxy s2 for iphone 4 or ? -

Samung Galaxy S2 in good condition , screen perfect has always had screen protector on , chrome around the edges has started to flake a little and has scratch on the back of the battery cover ( replacable for few pounds to make look new again ) Ive had the phone for over yr now so bored of the phone , it was originaly on o2 network but payandgo so its unlocked to any network also , I have the USB cable and the wall charger ONLY i have lost the box along the way somwhere Im sure u all know the spec on the phone if not google I would like to swap for: Iphone 4 ( WHITE PREFERED ) will not post / travel far or sell for cash as I have for sale here a Blackberry Curve 8520, it has a qwerty keyboard, great display, 65,000 colours, wi-fi - blue tooth, slightly used. It is a social networking phone, radio+mp3 player, 8 touch pad-scroller I bought it new for 150 twelve months ago . Orange not unlocked. ornigal box and charger included. If you are interested please call me on 07768562519 Blackberry for sale 8520 unlocked curve good condition white colour but no service or no signal in UK (only for abroad). Only comes with charger no box no other accessories. New white colour body installed. kindly see the display picture for exact item. MOBILIX PHONE LAB 0208 523 0698 67 CHINGFORD MOUNT ROAD, WALTHAM FOREST, E4 8LU OPEN 7 DAYS A WEEK DOOR SERVICE AVAILABLE PC/LAPTOP SALE AND REPAIR CENTRE LAPTOP ACCESSORIES LOST DATA RECOVERY, ANTIVIRUS MOBILE UNLOCKING MOBILE REPAIRING FULL IT SUPPORT SERVICES PHOTOCOPY AND FAX COLOUR PRINTING AND SCANNING &a