These LG mobile phone secret codes are known to work on the majority of LG cell phones.
*#06#
IMEI Display.
*#07#
Displays the IMEI and Software Version.
*8375#
Displays the LG software version, this does not seem to work on all phones.
#PWR 668
Initiates a Factory test of your mobile phone.
2945#*#
Enter the Test Screen, use on the Main Menu.
2945*#01*#
Opens a secret menu on LG mobile phones.
*6861#
Check sum Check.
1945#*5101#
B1200 Models
2945#*5101#
5200 & 510W Models
2945#*70001#
7020 & 7010 Models
2947#*
500 & 600 Models
Accessing the Test Menu on LG-U81__ mobile phones.
Model 8330
637664#*#
Model 8180V10a
49857465454#
Model 8180 V11a
492662464663#
Model 8130-8138
47328545454#
Model 8110-8120
277634#*#
Other codes know to work with all LG-U81__ devices.
277634#*# or 47328545454#
Must be used without a SIM in the device, will display the phone version.
277634#*# or 47328545454#
Factory reset, once again no SIM card should be inserted. Be careful this will wipe all the data on your phone and cannot be reversed. Use with care.
2945#*88110#
Access the LG unlock menu. (SIM Present)