China Mobile Secret Codes

Enter into Engineering Mode: *#110*01#

Enter into factory Mode: *#987#

Restore Factory Settings: *#987*99#

Check Software Version: *#900# OR *#800#

Default User Codes: 1122, 3344, 1234, 5678

Change LCD Contrast: *#369#

To Enable COM Port: *#110*01# -> Device -> Set UART -> PS Config -> UART1/115200

Change Screen Language:
* *#0000# + Send : Set Default Language
* *#0007# + Send : Set Language to Russian
* *#0033# + Send : Set Language to French
* *#0034# + Send : Set Language to Spanish
* *#0039# + Send : Set Language to Italian
* *#0044# + Send : Set Language to English
* *#0049# + Send : Set Language to German
* *#0066# + Send : Set Language to Thai
* *#0084# + Send : Set Language to Vietnamese
* *#0966# + Send : Set Language to Arabic