First you will need to obtain the IMEI (serial number) for your handset. Type *#06# from your handset. The number that appears is the IMEI. Once you have this number you need to contact the Mobile Operator Customer Service department or use an online Subsidy Unlock service.
|Device must be in Portrait mode.
Hit the Dial button on the touchscreen.
|Type #7465625*638*Unlock Code #.
(Unlock Code is a unique 8 digit number).
Device will reply: Network Lock Deactivated.