How To Unlock ATT GTX75 (Quickfire)

[kanniappan]

How To Unlock ATT GTX75 (Quickfire)
 
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 www.unlockvilla.com team
 
Device must be in Portrait mode.
Type: *#865625#

 
SIM Unlock Process Menu will appear.
Press OK to continue.
 
Enter Unlock Code will appear.
Enter the 16 digit subsidy unlock code.
Press Done.
Your device is unlocked.

[superuser]

Thanks for sharing the solution.