Default user code: 1122, 3344,1234,5678
Engineer mode:*#110 *01#
Factory mode:*#987#Enable COM port:*#110 *01 # -> Device-> Set UART – > PS Config -> UART1/ 115200
Restore factory settings:*#987 *99#
LCD contrast: *#369#software version : *#800#software version : *#900#set default language :*#0000# Sendset English language :*#0044# Sendset English language :*#001# Send
