try this Vodafone driver , althought after "sudo modprobe usbserial vendor=0x12d1 product=0x1003" alway prompt the "The device setup not completed" according to "blog.xuite.net/johnlin1958/ubuntu/17114993" also cannot use /dev/ttyUSB0 , ttyUSB1..... even can't check ppp option. Is there any way to use my 3.5G modem easily ? thank you for your reading my problem.