BOXED WHITE IPHONE 4 CHEAP SELL OR SWAP ?

iphone 4 on 02 or giffgaff,boxed with everything.very good condition needs new front which im waiting for from ebay,but still useable as i use it everyday,still has apple warranty till october 27.want a swap with a white galaxy s2 or a blackberry 9900 on 02 or unlocked crawley NO CALLS AS AT WORK PICK UP FROM CRAWLEY