User Manual
Page 14
..., you enter wrong PINs for a preset period in standby mode. In that case, contact your service provider. If you can still press to unlock the blocked PIN. Input the PIN code, and then press (OK). The PIN unblocking key (PUK) is idle for a specified number of times... consecutively, the SIM card becomes permanently invalid. Both the PIN and the PUK are configured separately. To unlock the keypad, press (OK). (Unlock), and then If the Auto keypad lock function is enabled, the keypad is locked automatically when the phone is used to answer...
..., you enter wrong PINs for a preset period in standby mode. In that case, contact your service provider. If you can still press to unlock the blocked PIN. Input the PIN code, and then press (OK). The PIN unblocking key (PUK) is idle for a specified number of times... consecutively, the SIM card becomes permanently invalid. Both the PIN and the PUK are configured separately. To unlock the keypad, press (OK). (Unlock), and then If the Auto keypad lock function is enabled, the keypad is locked automatically when the phone is used to answer...