Category Archives: GSM Modem

Summary Table — MOBITEK Modem in Linux Mint in VM and Linux Mint as Host OS

MODEM Linux Mint in VM Linux Mint in Dell-D630
MOBITEK S80 MOBITEK S80 does not work (no response in CuteCom) in VM-Linux Mint MOBITEK S80 can work in Linux Mint using USB. There are 4 COM ports created in Linux (ttyUSB0, ttyUSB1, ttyUSB2, ttyUSB3), only “ttyUSB3” is used for the AT command.
MOBITEK Q24 MOBITEK Q24 is working (can send and read SMS) in VM-Linux Mint MOBITEK Q24 also can work in Linux using “ttyUSB0”


Difference Between Wavecom Fastrack Supreme 20 and Wavecom Fastrack M1306B

Wavecom Fastrack Supreme 20 GSM Modem

Please note that Wavecom Fastrak M1306B and Wavecom Fastrack Supreme 20 are from the same Wavecom GSM Modem family. Therefore both models are 100% compatible.


The difference is that Supreme 20 has USB port and the USB can supply power to the GSM modem while M1306B does not have both features.

How to Set-Up MOBITEK S52 3G Modem in Linux Running in VirtualBox

Configuring VirtualBox

  1. Type “lsusb” in Terminal to check if the modem is connected
  2. If not goto USB Setting
  3. Click add
  4. Click SimTech and then click OK
  5. Type “lsusb” in Terminal for confirmation


  6. Change to USB2
  7. Fix the mode to “CR,LF Line end”
  8. Click Open device
  9. Type command in this space
  10. Type (AT+CMGS=”SIM number”) then press enter
  11. Change mode to “Hex input” and type “1A” to send SMS, this is an alternative way for “CTRL Z”
  12. Change the mode to “CR,LF Line end” and type the command to read SMS, AT+CMGL=”ALL”

MOBITEK S80 is 99% Compatible with Sierra Wireless FX100

Sierra Wireless FX100 3G Modem has reached end-of-life production cycle. It may be difficult to obtain a new unit. The good news is that  MOBITEK®  S80 is 99% compatible with Sierra Wireless FX100 3G Modem.

SPECIFICATION MOBITEK-S80_backMOBITEK S80 Sierra Wireless FX100Sierra Wireless FX100
SL8082T Module Yes Yes
GSM (2G) Network Quad Band Yes Yes
GPRS Network Yes Yes
WCDMA (3G) Network Dual Band Yes Yes
Serial Port (RS-232) 15-pin Yes Yes
USB Port Yes Yes
Sierra Wireless USB Driver Yes Yes
Open AT Yes Yes
GPS No Yes
Voice Yes Yes

More Information


How to Set-Up Sierra Wireless GL6110 GSM Modem

  1. Connect the antenna to the modem
  2. Connect the power adapter to the modem.
  3. Plug in the power adapter, turn on power
  4. Insert the SIM card, modem green LED will blink.GL6110-setup-04
  5. Attach serial Cable to modem and the other end to the USB-to-serial converter.
  6. Plug the USB cable into the USB port of the PC.
    The USB driver is the same as MOBITEK Q24 Modem.

How to Install MOBITEK Q24 GSM Modem Hub’s USB Driver in Linux

This guide applies to the following MOBITEK products:-

  • MOBITEK Q24 GSM Modem
  • MOBITEK Q24 GSM Modem Hub

USB Driver had been pre-installed in the following Linux Distro:-

  • Ubuntu 11.10 and above
  • Any distro based on Ubuntu 11.10 and above such as Linux Mint

For other distro, you may need to compile the driver into Linux kernel which is not covered in this guide.


  1. Optional — install “Cutecom” from Software Manager.

    Linux_USB-01Click on “install”
  2.  Go to “User and Groups”.
  3.  Click on the current user and then click on “Groups”.
  4.  Assign the following “Groups” or permissions to the user:-
    1.  dialout
    2.  root
    3.  sudo
    4. tty
  5.  Restart Linux.
  6.  Open terminal and enter “lsusb”.
  7. If MOBITEK Q24 GSM Modem Hub is detected by Linux, there should be 2 items listed on screen — “Future Technology Devices International, Ltd FT4232H”.
  8.  Open CuteCom (or minicom).
  9.  Manually type “/dev/ttyUSB0”
  10. Click on “Open device”.
  11. For the input method below, change the Input type from “LF line end” (default) to “CR,LF line end”.
  12.  Enter “AT”, and if “OK” is returned or displayed then this mean that the modem is successfully connected to “/dev/ttyUSB0”.
  13. Click “Close device”.
  14. To check next modem in MOBITEK Q24 GSM Modem Hub, then type:-
    1. /dev/ttyUSB1
    2. /dev/ttyUSB2
    3. /dev/ttyUSB7
      and repeat Step 10 until 13.

How to Insert SIM Card

(note: for updated post, please refer to

  1. Before you insert the SIM card into your Modem, you must check the position of SIM Card.
    – MOBITEK MobiGATE or MOBITEK Q24 STK MODEM HUBHow to Insert SIM Card-01
    – The correct position of SIM Card to be inserted:How to Insert SIM Card-02
  2. When insert the SIM Card:-
    – the “gold area” of the SIM Card should be facing at down position;
    – turn on the switch button, you can see the blue LED Blinking which means your modem is connected. to the GSM/3G network

Applies To

  • MOBITEK MobiGATE, Model: SG-B-8-L-W
  • MOBITEK MobiGATE, Model: SG-B-8-U
  • MOBITEK Q24 STK Modem Hub, Model: B-8-U
  • MOBITEK Q24 GSM Modem Hub, Model: B-8-U