Warning: Do not enter any wrong unlock unlock codes on your Sony D6503 mobile phones. If you enter over a certain amount of wrong unlock codes on your mobile phone, your phone may get hard locked and sometimes become unusable.1 - Switch ON your Sony D6503 without a SIM Card.
2 - Compose :
*#7465625*12*CODE#.
CODE: The unique unlock code for your Sony D6503.
Each Sony D6503 mobile phone has an unique unlock code. You can buy the unique unlock code for your Sony D6503 mobile phone at www.mobileunlocksolutions.com.