All china code

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# 
8)Software version : *#900# 
9)Set default language : *#0000# Send 
10)Set English language : *#0044# Send Aall the chinese phones