Service Codes "Chinese" Cell Phone

* Default user code: 1122, 3344, 1234, 5678

* 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#

* Software version: *#800#

* Software version: *#900#

* Set default language: *#0000# Send

* Set English language: *#0044# Send

* Set English language: *#0001# Send

* Set English language: *#001# Send