The china mobile codes are very difficult to get. As per the user demand i m posting the secret codes for china mobiles which work on all the chinese phones Here are the codes for china mobiles try it 

1)Default user code : 1122, 3344, 1234, 5678

 2)Engineer mode : *#110*01# 

3)Factory mode : *#987# 

4)Enable COM port : *#110*01# -> Device -> Set UART -> PS Config -> UART1/115200

 5)Restore factory settings : *#987*99# 

6)LCD contrast : *#369#

 7)Software version : *#800#