Can't open serial port on phone.

[Boki]

Hi All,

I am using J2ME code to control serial port, however, I can't have it
work correctly.

Here is my error message:

FAILED withclass javax.microedition.io.ConnectionNotFoundException:
The requested protocol does not exist comm:com0

my code:

comm = (StreamConnection)Connector.open("comm:com0");

I also had tried the CommConnection:

(CommConnection)Connector.open("comm:COM0;baudrate=115200",
Connector.READ_WRITE,
true);

I have tried on many SDK ( Nokia S40, S60, Sony Ericsson, Motorola
SDK ... )

The Moto SDK even can't run correctly, it will close emulator.

Thanks!
Boki.