Symphonymobile codes –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 (new firmware) : *#001# Send