Above udev rules solved this problem too. But my modem uses HSDPA network and it have to detect the wireress connection using "AT+CGREG?" not for "AT+CREG?" (if you use GSM network ,it can detect wireless connection using "AT+CREG?").
Above udev rules solved this problem too.
But my modem uses HSDPA network and it have to detect the wireress connection using "AT+CGREG?" not for "AT+CREG?" (if you use GSM network ,it can detect wireless connection using "AT+CREG?").