--> Connect time 0.6 minutes.
--> pppd: ??[01]??[01]
--> pppd: ??[01]??[01]
--> pppd: ??[01]??[01]
--> Disconnecting at Sat Jul 29 09:45:42 2017
--> The PPP daemon has died: A modem hung up the phone (exit code = 16)
--> man pppd explains pppd error codes in more detail.
--> Try again and look into /var/log/messages and the wvdial and pppd man pages for more information.
--> Auto Reconnect will be attempted in 5 seconds
--> Cannot open /dev/ttyUSB0: No such file or directory
--> Cannot open /dev/ttyUSB0: No such file or directory
--> Cannot open /dev/ttyUSB0: No such file or directory
--> Disconnecting at Sat Jul 29 09:45:42 2017

raspberrypi pppd[1474]: pppd 2.4.6 started by root, uid 0
raspberrypi pppd[1474]: Using interface ppp0
raspberrypi pppd[1474]: Connect: ppp0 <--> /dev/ttyUSB0
raspberrypi pppd[1474]: CHAP authentication succeeded
raspberrypi pppd[1474]: CHAP authentication succeeded
raspberrypi pppd[1474]: Could not determine remote IP address: defaulting to 10.64.64.64
raspberrypi pppd[1474]: local  IP address 10.97.88.33
raspberrypi pppd[1474]: remote IP address 10.64.64.64
raspberrypi pppd[1474]: primary   DNS address 194.204.159.1
raspberrypi pppd[1474]: secondary DNS address 194.204.152.34
raspberrypi pppd[1474]: Modem hangup
raspberrypi kernel: [ 2730.655397] usb 1-1.2: USB disconnect, device number 7
raspberrypi rsyslogd-2007: action 'action 17' suspended, next retry is Sat Jul 29 09:46:10 2017 [try http://www.rsyslog.com/e/2007 ]
raspberrypi kernel: [ 2730.679487] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
raspberrypi kernel: [ 2730.679628] option 1-1.2:1.0: device disconnected
raspberrypi kernel: [ 2730.681488] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
raspberrypi kernel: [ 2730.681607] option 1-1.2:1.1: device disconnected
raspberrypi pppd[1474]: Connect time 0.6 minutes.
raspberrypi kernel: [ 2730.693755] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
raspberrypi kernel: [ 2730.693876] option 1-1.2:1.2: device disconnected
raspberrypi kernel: [ 2730.694196] qmi_wwan 1-1.2:1.3 wwan0: unregister 'qmi_wwan' usb-20980000.usb-1.2, WWAN/QMI device
raspberrypi pppd[1474]: Sent 0 bytes, received 0 bytes.
raspberrypi pppd[1474]: Connection terminated.
raspberrypi pppd[1474]: Exit.

# Huawei E398

DefaultVendor= 0x12d1
DefaultProduct=0x1505

TargetVendor=  0x12d1
TargetProduct= 0x1506

CheckSuccess=20

# Standard profile
;MessageEndpoint= 0x0f

MessageContent="55534243123456780000000000000011062000000100000000000000000000"

[Dialer orange]
Stupid Mode = 1
Init3 = ATZ
Init4 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init5 = AT+CGDCONT=1,"IP","internet"
Password = internet
Phone = *99#
Idle Seconds = 0
Modem Type = Analog Modem
Compuserve = 0
Baud = 460800
Auto DNS = off
Dial Command = ATDTW
Ask Password = 0
ISDN = 0
Username = internet
Carrier Check = off
Modem = /dev/ttyUSB0

[Dialer pin]
Init1 = AT+CPIN=0000

[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 +FCLASS=0
Modem Type = Analog Modem
; Phone = <Target Phone Number>
ISDN = 0
; Password = <Your Password>
; Username = <Your Login Name>
Modem = /dev/ttyUSB0
Baud = 9600

max_usb_current=1
safe_mode_gpio=4