Warning: Do not enter any wrong unlock unlock codes on your Sagem my421z 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 Sagem my421z with a
NOT ACCEPTED SIM Card.
2 - Sagem my421z will display the message "SIM VERROU".
3 - Enter the Unlock Code.
NOT ACCEPTED : We mean, to use a sim card from a network other than the network to which your Sagem my421z is locked to.
WARNING : If your Sagem my421z shows "CODE POSTE" it's because a Security Code has been set on the Sagem my421z, it can be either 0000 or 1234 but we can't calculate this code with the IMEI because it's not a code from the manufacturer of Service provider but it's a code given by the user of the Sagem my421z!
Each Sagem my421z mobile phone has an unique unlock code. You can buy the unique unlock code for your Sagem my421z mobile phone at www.mobileunlocksolutions.com.