Setting up Sprint 3G/4G modem (Franklin U600) under Archlinux

Last month I bought this modem, internet access urgently was needed. I have no time back there, so first time I've used this dongle under virtualized Windows machine. But after a while it was enough).

So I've done some lurking over the internet, found many folks were complaining about problem exactly with this model. No, I won't surrender, I thought.

So, first the first thing is I'm using Archlinux, kernel version 3.7.1-2-ARCH.

The second thing is - forget about Sprint Guide on how to set up this modem under linux, it won't work, all this 'modprobe usbserial vendor=0x0foo product=0x0bar' stuff.

All you need to do is next few steps:

1. Install 'usb_modeswitch' and 'wvdial', nothing hard here.
2. Make sure usbserial module isn't loaded (just 'rmmod usbserial').
3. Insert your dongle, see what 'lsusb' is telling you, there must be device with ID 1fac:0150.
4. Here we go. Look over file '/etc/usb_modeswitch.setup', and find a part exact with your ID, copy section below into the end of '/etc/usb_modeswitch.conf' file.
5. Run 'usb_modeswitch -c /etc/usb_modeswitch.conf -W' and patiently wait. -W is just for verbosity.
6. Then run 'lsusb' again, make sure device with ID 1fac:0151 appear. Here is the most interesting part: indeed cdc_acm module takes care about modem, not usbserial. And even more - if you doesn't unload usbserial module - cdc_acm wouldn't work out properly.
7. Run 'dmesg|grep -i acm' to determine to which tty your modem is binded. In my case it was ttyACM0.

We almost done, just run 'wvdialconf' to make defaut wvdial config, and then edit '/etc/wvdial.conf', add ' Carrier Check' and 'Stupid Mode' options. My final conf looks like this:

[Dialer Defaults]
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = USB Modem
Phone = #777
ISDN = 0
Username = your username if needed
Init1 = ATZ
Password = your pass if needed
Modem = /dev/ttyACM0
Baud = 460800
Carrier Check = no
Stupid Mode = yes

And, finally type in 'wvdial' - and you on-line! Good luck, folks.

PS: forgive my bad english, I'm too sleepy right now).