LG -E450 Service Manual page 255

11. HIDDEN MENU
LCD Always On
Switch to LCD Backlight ON/OFF
WCDMA Only test list
- Factory Reset
- Modem Settings
- Module Test
- SIM Test(Not Implemented)
- Call Test
- Streaming
- WAP Debug
- FM Radio Test(Not Implemented)
- DRM Test
- Contacts Test
- Log service
- Flex test
- SMPL Counter
- North America APN Settings
Factory Reset:
- Format SD card : External SD Card Data reset
- Factory Rest :Changing the Factory
- Delete Userdata: Userdata reset
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Only for training and service purposes