The most important thing that you need to unlock your phone is the unlocking code. For that you should try using different types of online help. At these sites you will get the unlocking code. For getting the code you will need to gather some valuable information about your phone and among them IMEI number is the most important. Actually this is a 15 digit number that is unique for each phone.
However, the question is that from where you will get the number. This is not a hard work. You just need to type *#06# on your phone to get the IMEI number. You can also get it by removing the battery. There is a sticker on the back of your phone where you can find the unique number. But you will need to be care about to copy the number actually right as the unlock code that you will receive totally depends on this IMEI number. So it is very much necessary to collect the number correctly.
After that you need to select the country and the network from the available option. Be sure that you have chosen your old network not the operator that you wish to connect now. And always fill the email address section correctly as the website will send the unlocking code to your provided email address. If you are no careful at the time of filling the email id then the unlocking code will be sent to a wrong address.
But the most valuable and the most important part of this unlocking process is the payment step. Basically there are 3 types of payment methods from which you can use one to purchase the code to Unlock LG Optimus. And the option is PayPal, Skrill and Credit Card. You just need to choose any one from them as your wish that is the most convenient for you and can help you to proceed to the payment area. And when the payment process is over you will get 2 mails regarding the code, one is the confirmation mail and the other including the unlocking code.
After getting the code you will need to insert the new SIM card according to your wish. And when your phone will ask for the unlocking code, you should put the unlocking code that you have got from the mail. You can also do it by making a call. You just need to type 2945#*model number# or *#865625#. And when it prompted for code, just enter the unlocking code that you have got earlier to Unlock LG Optimus.