Secret codes - Spice :
S404 enable COM port: *#42253646633# -> Device -> Set UART -> PS -> UART1/115200
S410 engineer mode: *#3646633#
S900 software version: *#8375#
S900 serial no: *#33778#
Secret codes - Philips :
S200 enable COM port: *#3338913# -> Device -> Set UART -> PS -> UART1/115200
Secret codes - VK-Mobile 3xx, 5xx :
software version: *#79#
software version: *#837#
service menu: *#85*364# (hold #)
Secret codes - VK200, VK2000, VK2010, VK2020, VK4000 :
software version: *#79#
service menu: *#9998*8336# (hold #)
reset defaults (phone/user code reset to default): *#9998*7328# (hold #)
Secret codes - Pantech :
software version: *01763*79837#
service menu: *01763*476#
Reset defaults (phone/user code reset to default): *01763*737381#