I've lasted nearly two weeks but decided to swap for the 4S so my 4 is up for sale. Really is as new, been in a case since day one and still even has the cover on the back. Complete with box, unused headphones, 2 * cases, charger etc. Was bought outright from Tesco, so on 02 (tesco) I 'think' being 02 any sim will work. Its a black 16GB model upgraded to the version 5 operating system. Looking for £300 plus what ever postage.