China mobile secret codes

These are some China mobile phone secret codes which might come handy.

Default user code- 1122,3344,1234,5676

Engineer mode- *#110*01#

Restore settings- *#987*99#

LCD- *#369#

*# 77218114#

*#881188#

*#94267357#

*#9426*357#

*#19912006#

*#3646633#