Failed to send sms through wvdial (No Carrier! Trying again) - raspberry-pi

Question

Problem
pi#raspberrypi:/~ $ sudo wvdial
--> 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
--> Modem initialized.
--> Sending: ATDT07********
--> Waiting for carrier.
ATDT07********
NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT07********
--> Waiting for carrier.
ATDT07********
NO CARRIER
--> No Carrier! Trying again.
--> Sending: ATDT07********
--> Waiting for carrier.
ATDT07********
NO CARRIER
--> No Carrier! Trying again.
sudo wvdialconf
pi#raspberrypi:/~ $ sudo wvdialconf
Editing `/etc/wvdial.conf'.
Scanning your serial ports for a modem.
ttyUSB0: ATQ0 V1 E1 -- OK
ttyUSB0: ATQ0 V1 E1 Z -- OK
ttyUSB0: ATQ0 V1 E1 S0=0 -- OK
ttyUSB0: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB0: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB0: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- ERROR
ttyUSB0: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB0: Speed 9600: AT -- OK
ttyUSB0: Max speed is 9600; that should be safe.
ttyUSB0: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB1: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyUSB1: ATQ0 V1 E1 -- failed with 9600 baud, next try: 9600 baud
ttyUSB1: ATQ0 V1 E1 -- and failed too at 115200, giving up.
ttyUSB2: ATQ0 V1 E1 -- OK
ttyUSB2: ATQ0 V1 E1 Z -- OK
ttyUSB2: ATQ0 V1 E1 S0=0 -- OK
ttyUSB2: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyUSB2: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyUSB2: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- ERROR
ttyUSB2: Modem Identifier: ATI -- Manufacturer: huawei
ttyUSB2: Speed 9600: AT -- OK
ttyUSB2: Max speed is 9600; that should be safe.
ttyUSB2: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
Found a modem on /dev/ttyUSB0.
Modem configuration written to /etc/wvdial.conf.
ttyUSB0: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2"
ttyUSB2: Speed 9600; init "ATQ0 V1 E1 S0=0 &C1 &D2"
Above details says that i can use ttyUSB0 or ttyUSB2 to send sms
lsusb
Here the dongle is detected as modem
pi#raspberrypi:/~ $ lsusb
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 009: ID 12d1:1001 Huawei Technologies Co., Ltd. E161/E169/E620/E800 HSDPA Modem
Bus 001 Device 003: ID 09da:054f A4Tech Co., Ltd.
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
/etc/wvdial.conf
[Dialer Defaults]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2
Modem Type = Analog Modem
ISDN = 0
New PPPD = yes
Phone = 07********
Modem = /dev/ttyUSB0
Username = etisalat
Password = etisalat
Baud = 9600

Answer 1

To send sms through modem, it is required to switch to gsm text mode. wvdial.conf properties have to updated like following:
[Dialer Defaults]
Init1 = AT
#
Init2 = AT+CSCS="GSM"
# Set the GSM modem in SMS Text Mode
Init3 = AT+CMGF=1
# Get info about the current operator.
Init4 = AT+COPS?
# To check whether the GSM/GPRS modem or mobile phone supports SMS text mode,
Init5 = AT+CMGF=?
# Display the currently active modem mode.
Init6 = AT^GETPORTMODE
# : 1,1,1 : SMS text mode send, receive, boradcast supported
Init7 = AT+CSMS=1
# Device model Number
Init8 = AT+GMM
# 31, 3207880 : First number is signal strength, 0...31 where 31 is maximum possible. 2nd number = ?
Init9 = AT+CSQ
# 0,0 : means the modem i snot connected to the network
Init10 = AT+CREG?
# 1 : means CDMA digital service available(0=no service, 2=TDMA, 3=analog)
Init11 = AT+CAD?
# should have said what storage memory is available for SMS
Init12 = AT+CPMS=?
# Type of the modem.
Modem Type = Analog Modem
# The location of the device that wvdial should use as your modem.
Modem = /dev/ttyUSB0
ISDN = 0
Baud = 9600
Dial Attempts = 3
when you save above properties, then wvdial will work fine...
In following file you will see the detailed explanation of all properties
https://github.com/morfikov/files/blob/master/configs/etc/wvdial.conf
https://www.developershome.com/sms/cmgsCommand3.asp