Here are instructions to Subsidy Unlock the Samsung SGH-A897 Mythic device.
First you will need to get the device’s IMEI number. Press *#06#. The number that is displayed is the 16 digit IMEI number for your device. This number is the serial number for the device needed to obtain the unique Subsidy Unlock Code for your device.
Next, contact your mobile operator’s Customer Service or go online to find an Subsidy Unlock service.
Last, type #7465625*638*(8 digit unlock code)#
If successful, the phone will display: Network Unlock Successful