very easy and safe method
Unlock code: 6803 3356 Code:
Welcome to Octopus box software version 1.0.6
Count of supported models: 364
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Platform: LG Infineon
Selected port: COM73
Selected baudrate: 115200
Selected model: GB102
Please reconnect battery...
Phone found.
Sending preloader...OK
Sending loader...OK
Reading info. Please wait...
Flash ID: 7F00F622
Flash type: SILICON7
IMEI: 353999-03-546333-6
Reading codes. Please wait...
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Unlock code: 6803 3356
To finish the operation, please perform the following steps:
1. Insert the original SIM card and type 2945#*20001#
2.Go to menu>Settings>Security>SIMLOCK and enter the code.