china & korean mobiles code (new) 2011

some codes r below related to china or korean mobile secret codes.u can check ,ur china mobile have valid imei or not .
set default language : *#0000# Send
set English language : *#0044# Send
set English language : *#001# Send
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#
Engineering mode:*110*01#
Factory mode: *#987#
Restore factory settings: *#987*99#
Software ver: *#900# or *#800#
Default user code : 1122 , 3344 , 1234 , 5678
Engineer mode : *#110 *01#
try with ur own risk ,iam not responsible for this