Thanks for Contacting us, First Please check when you insert another network SIM Chip on your phone then is your phone asking for "Enter Unlock Code" or is there T-Mobile Device Unlock APP in your phone.
If your phone asking for Unlock Code when you insert another GSM Network SIM Chip on your phone then YES you can unlock your phone by submit order in this service : http://www.freesimunlocker.com/unlock/lg
or if your phone has T-Mobile Device Unlock APP then sorry currently the "T-Mobile Device Unlock App Service" is not working with any of our suppliers. No 3rd party can unlock this app at the moment. If you wish, you can subscribe to this thread by Clicking Here so you will be the first to know when this service is available.