Bird- D716 correct piout ???
 

I recieved bird d716 phone with user lock, cable connector 18 pin, 3,9 pins[ key board up ] indicate gnd. how can i find tx, rx.....
pls, help me.
Thanks.

keyboard top
1.........18
3: Gnd
12: Rx
13: Tx

Also, pls, check, is pin-18 GND too or not.