Do you want Change your sim card in card if your phone.If it is so, that is unlock.Not unblock.You can unlock your Nokia Lumia 920 phone from network lock using unlock code. Unlock code is the best and safest way to unlock phone. You can get the unlock code for your phone from your Network service provider or any third party online vendors like http://www.simpleunlocking.com/nokia-e71/rs16wp9/ here you need to specify your country, Network name to which it is locked, IMEI number of your phone. Then they deliver unlock code to you through mail.And you can get free unlocking instructions from the site http://www.mobileunlockguide.com/nokia-e71 by using this unlocking instructions you can unlock your phone easily.
sahana
September 2013