If you are a CDMA phone user and your phone model is either LG LSP 340 or LG LSP 350, then this trick will surely help you.
As you all know you can set a security code in your phone so that no one can use it. Here I'll tell you a master security code for these 2 phones which always works irrespective of whatever your phone security code is.
It might come useful in case you have forgotten your phone security code and can't unlock it.
The Master code is 6278. You can try it. It has been checked by me lots of times and it works 100%.