Based on http://mynewn95.blogspot.com/2008/06/using-nokia-n95-as-modem-for-linux.html

Fixes /etc/wvdial.conf:

[Dialer Defaults]
Modem = /dev/ttyACM0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init5 = AT+CGDCONT=1,"IP","internet"
ISDN = 0
Phone = *99#
Username = internet
Password = internet
Modem Type = Analog Modem
Stupid Mode = yes