In order for the EcmtAgent running on the device to be able to communicate with the IDE on your computer, the computer must be running the Device Connectivity Tool.
Note: Before setting up the Device Connectivity Tool, make sure to set up the device.
To set up the Device Connectivity Tool:
Launch the Device Connectivity Tool.
Select the correct connection, and click Connect. After the connection is established, the EcmtAgent and Device Connectivity Tool both change their status to "Connected". Keep the Device Connectivity Tool running throughout the debugging session.
For more information about establishing a connection, see the SDK documentation.
Figure: EcmtAgent and Device Connectivity Tool connected over Bluetooth
The required connection between the device and the computer is established. You can now set up the IDE and debug the MIDlet.