[~]$ sudo wvdial
[sudo] password for rico:
--> WvDial: Internet dialer version 1.61
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2
ATQ0 V1 E1 S0=0 &C1 &D2
OK
--> Sending: AT+CGDCONT=1,"IP","free"
AT+CGDCONT=1,"IP","free"
OK
--> Modem initialized.
--> Sending: ATDT*99#
--> Waiting for carrier.
ATDT*99#
CONNECT 150000000
--> Carrier detected.  Starting PPP immediately.
--> Starting pppd at Mon Mar 18 00:01:23 2019
--> Pid of pppd: 16611
--> pppd: �U
--> Using interface ppp0
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> pppd: �U
--> Using interface ppp0
--> pppd: �U
--> pppd: �U
--> pppd: �U
^CCaught signal 2:  Attempting to exit gracefully...
--> Terminating on signal 15
--> pppd: �U
--> Terminate Request (Message: "User request" )
--> pppd: �U
--> Disconnecting at Mon Mar 18 00:01:24 2019
[~]$ cat /etc/wvdial.conf

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Init3 = AT+CGDCONT=1,"IP","free"
Modem Type = USasd
Baud = 460800
Stupid Mode = 1
New PPPD = yes
Modem = /dev/ttyUSB3
ISDN = 0
Phone = *99#
Username = []
Password = []

[~]$ cat /etc/ppp/peers/wvdial
noauth user john
name wvdial