In order to unleash the full potential of your phone, you need to unlock it. Here is a great website link which will guide you how to unlock the Sony's W810i ( Walkman Series Phone ). (http://www.avforums.com/forums/sony-ericsson-mobile-phone-discussions/1059225-complete-se-w810-guide-debrand-unlock-cid-49-debrand-cid-50-instructions.html) Enjoy Happy Unlocking
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