Engineering mode is designed to allow a service man/engineer to view and test the basic functions provided
by a handset. The key sequence for switching the engineering mode on is “2945#*#” Select. Pressing END
will switch back to non-engineering mode operation. Use Up and Down key to select a menu and press
‘select’ key to progress the test. Pressing back key will switch back to the original test menu.
Try this code on your LG Mobile Phone and put a comment for successful or unsuccessful LG Mobile Phone model you have try.