CHINA MOBILE SECRET CODES

The china mobile codes are very difficult to get.
i Am posting the secret codes for china mobiles which work on all the chinese phones.
Here are the codes for china mobiles
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# Send
Set English language : *#0044# Send
Set English language (new firmware) : *#001# Send