If you insert your AOW Data SIM card into your device and receive a message that says "Invalid SIM card", "Network locked SIM card", "Restricted" or "Contact Service Provider" this means that your device is locked to a carrier.
In order to obtain the unlock PIN to unlock your phone, you will need to contact your carrier or use a third-party device unlocking service such as DoctorSIM.
Click here for more information about unlocking your phone.