Hi, You need to contact your provider and ask them to unlock it their end. This costs you about 20 pounds. Then you put a different Sim card in, plug into iTunes and restore. That's the process. You wouldn't normally lock it again, why would you want to? All the best Steve -- Computer Room Services 77 Exeter Close Stevenage Hertfordshire SG1 4PW Tel: 01438-742286 Mob: 07956334938 Fax: 01438-759589 Email: steve@xxxxxxxxxxxxxx Web: http://www.comproom.co.uk -----Original Message----- From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of Mohammed Adeel Sent: 04 September 2012 20:57 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] Unlocking Iphone Hi, I am thinking of asking my network provider to unlock my iphone. I know for other phones like Nokia that the unlock has nothing to do with the handset so even if I format the firmware, it will still stay unlocked. Is there any way an unlocked Iphone can go back to being locked again say for example if I did a restore via Itunes? Thanks, ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq