I tried every method I found to make it work. What finally works for me is ejecting the virtual cdrom.
itorres@itorres-laptop:~$ tail -100 /var/log/messages | grep "scsi generic"
Sep 29 11:10:34 itorres-laptop kernel: [ 1246.265124] sr 12:0:0:0: Attached scsi generic sg2 type 5
itorres@itorres-laptop:~$ sudo eject /dev/sg2
With this the /dev/ttyUSB* devices appear. Add your wvdial recipes to /etc/wvdial.conf and you’re ok to go.
# /etc/wvdial.conf
[Dialer Defaults]
Phone = *99***1#
Username = MOVISTAR
Password = MOVISTAR
Dial Command = ATDT
Stupid Mode = 1
[Dialer pin]
Modem = /dev/ttyUSB0
Init1 = AT+CPIN= 1234
[Dialer reset]
Modem = /dev/ttyUSB0
Init1 = AT
[Dialer movistar]
Phone = *99***1#
Modem = /dev/ttyUSB0
Baud = 460800
Init2 = ATZ
Init3 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ISDN = 0
Modem Type = USB Modem
Init5 =AT+CGDCONT=1,"IP","movistar.es";