Apple iphone 4 16gb no signal ?

I have for sale a used but in good condition iphone 4 16gb no signal will probably work abroad If you have any questions just ask. can deliver if you live in london for sale or swap my Sony Ericsson xperia x10i with ICS firmware on the t-mobile network im looking to swap for a nice PC monitor or another mobile phone open to offers 85ovno Nokia lumia 710 window phone in black good condition with box and all accessories would like to swap for iPhone 3GS or sell and can get picks if needed thanks everything, all network. cash only no swap. except bb curve 8520 + 250 pounds. for pick up good condition with screen protector and leather casing. CASH ONLY till mid night of 6th august only! Samsung Galaxy Europa A few minor scratches but in good condition. Unlocked to any network. Comes with 1Gb memory card, USB cable, charger, micro USB adapter and original box. 40