Error 3902 writting the data to serial


When I want to send a information on serial from my android phone, I've got: error 3902 ERROR WRITTING THE DATA TO SERIAL.
It seems that serial is open (test OK). I'm connected on a Arduino UNO R3.
I don't find information on this error

Have you made any progress with your problem ?

No, it doesn't works..

Is your arduino original or a clone?