Gprs shield use Uart connection on Raspberry Pi. You can use following transactions for work.

  1. Firstly, Connect your Raspberry Pi to internet and run sudo apt-get update to update your Raspberry Pi
  2. We should stop getty service on Raspbian.
    1. For non Raspberry Pi 3 machines, remember it’s /dev/ttyAMA0 that is linked to the getty (console) service. So you need to perform this command from a terminal window:
      • sudo systemctl disable [email protected]
      • sudo systemctl disable [email protected]
    2. For Raspberry Pi 3’s the command is similar but referencing /dev/ttyS0:
      • sudo systemctl stop [email protected]
      • sudo systemctl disable [email protected]
    3. You also need to remove the console from the cmdline.txt. If you edit this with:
      • sudo nano /boot/cmdline.txt

        remove the line: console=serial0,115200 and save and reboot for changes to take effect.
    4. You also need to enable uart with edit /boot/config.txt file
      • sudo nano /boot/config.txt and add enable_uart=1 to bottom of file then save and reboot for changes to take effect.
  3. Install ppp application with sudo apt-get install ppp
  4. Edit /etc/ppp/peers/gprs file and add the following:
  5. Edit /etc/network/interfaces and add the following:
  6. Reboot your machine and Let’s connect 😉
  7. run ifconfig ppp0 at terminal window to see following outputs and see your ip

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