All LG phones can be unlocked by using a SIM card and entering a network unlock code. The network unlock code can usually be found by contacting the original SIM card provider, but there are other ways to obtain an unlocked LG phone.
One way to obtain an unlocked LG phone is to purchase the phone directly from the manufacturer. Other options including purchasing from an official retailer such as Amazon.com or from a brick-and-mortar store such as Best Buy. Another way to acquire an unlocked LG phone is to purchase the phone used, refurbished or like-new from user auction sites such as eBay.