Connenct Internet via Phone in Ubuntu

First, Edit file /etc/wvdial.conf

Then, Add :
----------- start----------------
[Dialer Defaults]
Modem = /dev/ttyACM0
ISDN = off
Modem Type = Analog Modem
Baud = 460800
Init = ATX3
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 =
Init4 =
Init5 =
Init6 =
Init7 =
Init8 =
Init9 =
Phone = *99***2#
Phone1 = *99***1#
Phone2 =
Phone3 =
Phone4 =
Dial Prefix =
Dial Attempts = 1
Dial Command = ATM1L3DP
Ask Password = off
Password = im3
Username = gprs
Auto Reconnect = off
Abort on Busy = off
Carrier Check = on
Check Def Route = on
Abort on No Dialtone = off
Stupid Mode = on
Idle Seconds = 0
Auto DNS = on
;Minimize = off
;Dock = off
;Do NOT edit this file by hand!
-------------------------

Run in terminal :
$ wvdial

Now we can browse the world in Ubuntu

This is GRATIS-TIS 4U