It can be unlocked using the codes. If you have the code, please follow the instructions.
Motorola C168i Unlocking Instructions
Warning : Do not enter any wrong unlock codes on your Motorola C168i mobile phones. If you enter over a certain amount of wrong unlock codes on your Motorola C168i mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch ON your Motorola C168i with a NOT ACCEPTED SIM Card,
2 - Phone will display "Enter Special Code",
3 - You can now enter the Unlock Code.
NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Motorola C168i is locked to.
If you have any doubt regarding this, visit Superunlockcodes.com/motorola-c168i/rs12wp9/ .They will also provides the unlocking solution for your mobile.