IPhone 4 - 8GB - Top condition - Unlocked - Black - Swap ideally. ?

I would like to swap this for a HTC One X or a Samsung galaxy Note. The iPhone is black, 8GB, unlocked to any network. Include a spare screen protector, the hard aluminium case, comes all boxed with original accessories. (case pictured) It is a full network unlock done by the 3Network over the phone, and it cost me money to do it. I have installed Siri on the phone... just like on the iphone 4s. I can leave this on if you wish, but I can also take it off, its your preference. I would only accept cash if it was enough for me to go and buy a Samsung galaxy Note. THIS PHONE IS USED AND HAS A COUPLE OF MARKS ON IT BUT NOTHING MAJOR IT RUNS 4.1 ANDROID JELLY BEAN AND WORKS FINE. COMES UNBOXED AND WITH A SAMSUNG CHARGER. THIS PHONE WILL BE IN RICHMOND DURING THE DAY. This is a brand new and unopened Samsung S3 in Marble White. The phone is 16GB capacity and it is unlocked to all networks in the UK which means it would be worldwide too. I am selling this phone because someone bought it for me as a gift, but I already have an iPhone 4S , so I do not need this phone. The price attached to the phone - 400.00, is negotiable please get in contact if interested. Brand New Iphone 4s 64 GB FOR SALE ONLY A FEW LEFT !! I ONLY DO DELIVERY AT THE MOMENT TILL 3 WEEKS WHEN IAM BACK PLIZ DONT REPLY TO THIS IF YOU NOT SERIOUS DELIVERY TIME 4-7 DAYS TRACKING NUMBER PROVIDED Thank you I am selling my iPhone 4 16gb only 1 month old which is in like new condition and unlocked to all networks which was done via apple.Reason for sale is because I have upgraded to an iPhone 4s.The phone comes complete with