I bought a CDMA mobile phone that can use as modem, this http://smartfren.com/xstream/ and i wanna try it on my ubuntu plug usb , and run "lsusb" callmegus@Presario-CQ43-304AU:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 058f:a001 Alcor Micro Corp. Bus 003 Device 002: ID 1bbb:0106 T & A Mobile Phones Bus 003 Device 003: ID 15d9:0a4c Trust International B.V. USB+PS/2 Optical Mouse Bus 004 Device 002: ID 0a5c:21e3 Broadcom Corp. I successfully "modprobe" this device, and connect to internet, but it's disconnected somehow .. and i can recconect it. I try "lsusb" again .. and something went wrong, here Bus 003 Device 002: ID 1bbb:1000 T & A Mobile Phones I do "modprobe" again and again , but it still won't connect Please guide me