thanks to xda chris0160 for posting these for a similar phone.
5689#*870# - LG Hidden Service Menu Thanks to EricDabbs
##RTN# - RTN Menu*
##SCRTN# - Erases any info that has been OTA provisioned. Forces a reboot and re-activation.
##DIAG# - Enables diag mode. this menu blocked by MSL. Simply enter your msl*
##DATA# - Advanced data menu. *
##DEBUG# - Debug Menu*
##CLEAR# - Reset network settings
##UPDATE# - Forces Activation
##GPSCLRX# - Clear GPS
##GPSTESTPRL# - ??
##WLAN# - WLAN info*
##LOG# - syslog info*
##MRU# - MRU Clear
##SSDRTN# - Reset SSD
##TEST - Data Test menu*
##YOUROWNMSLHERE# - Service Programming menu*
##4433386368# - Developer menu*
##4437736368# - Producer menu*