!!! Hi CHINAKING SUPPORTS COOLSAND ( USER CODE ) WORLD'S FIRST !!!
*#1830*# Engineer mode
*#6495*# Factory Mode
*#82510# Auto test
*#18*# Auto test
*#64*# Version info summery
*#88# Self test
*#3696# Open/close usb mode
*#002# Restore factory default it will wash security code too
*#11# Start record screen
*#12# Stop Record Screen
*#21# Play list
*#005# Start trace memory card
*#006# Stop trace memory card
**04*# Network selection
