Is there VNC client/server application available for Nokia devices ?
VNC application remotely controls devices via WLAN, Bluetooth or USB connection.
VNC shows phone's userinterface on the desktop computer. So you can
push buttons and write texts on real device from VNC application.
VNC is needed when on-device debugging Qt-application running on the phone,
but USB cable is too short and computer connected with device is too
far away from my hands.
VNC is not needed if it is possible to on-device dubug Qt-application via
Bluetooth or WLAN. But seems that on-device debugging is possible only
via physical USB connection.