All China Mobile Secret Codes : China Mobile Security Codes

China Mobile Useful Codes or Secret Codes 

• Default security codes for china mobiles : 1122, 1234, 3344, 5678
• Restore factory settings: *#987*99#
• Software version : *#800# 
• Software version : *#900#

China mobile secret codes

 

• Engineer mode : *#110*01# 
• Factory mode : *#987# 
• Enable test mode COM port : *#110*01# -> Device -> Set UART -> PS Config -> UART1/115200
• LCD contrast : *#369#