All chines mobile phone security & other important code

with this post i tell about chine mobile common default code the all chines mobile communally default like phone code, security code, are :- 1122, 3344, 1234 and 5678 now i tell other important china mobile code
for software version: *#800# and *#900#
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#
set for default language: *#0000# Send
set for  English language: *#0044# Send
set for  English language (for new firmware): *#001# Send
*#0086#, *#0886# set to China
*#0084#, *#0966# set to Vietnamese
*#77218114#
*#19992006#
*#881188#
#*94267357#
*#0084#call