- Switch your phone on without a SIM card inserted
- Then type : *#0000*CODE#
- To finish type : *#0001*CODE#
Model : 531 & 535
- Switch your phone on without a SIM card inserted
- Press and hold down on * while typing : 787292
- A new menu "Unlock Network" will appear, then select "YES"
- Enter the unlock code we sent to you
- Switch your phone on with a non accepted SIM card
- When the message "Enter Network Key" appears, enter the unlock code we sent to you