To unlock Your LG Optimus One You need to have original sim card ( sim card from network that Your phone is working now ).

You need to have also unlocking code.
You can get unlocking code for Your LG Optimus One on our site sim-unlock.net
You can find Your model using search fields or by going directly to unlock by code LG Optimus One.

To enter unlocking code to Your LG Optimus One You need to do :

1. Insert the sim card which your phone works now
2. type 2945#*500# or 2945#*509#
3. window appears for entering unlock code
4. if Your phone will ask for Network lock enter NCK received from Sim-Unlock.net
5. if Your phone will ask for Service provider code enter SPCK code received from Sim-Unlock.net
6. confirm code and press OK
5. Your phone is unlocked now

After unlocking You can use Your phone with sim cards from differents network like vodafone, t-mobile, O2, movistar, orange.
Unlocking also alow You to increase value of your LG Optimus One because it can be used with all network cards.

Don’t use free codes calculator, this free kind of software can block Your phone permanently.

Check our guide for unlocking LG P500 optimus ONE