How to access Sprint LG LS740 Hidden menu

To access the hidden menu on Spritn LG LS740:

1. Remove USB Cable
2. Dialer -> 5689#*740*


You can run a device test from the hidden menu to find out if there are some hardware defects when you experience any issues with your handset.

1.Dialer 5689#*740#
2.Select Device Test
3.Select ‘All Auto Test – Full’

Please notes that it is dangerous to change any settings in the hidden menu, Please do not change the default settings if you do not know what it is exactly.