Are there some tools or commands I can use to send USSD codes for checking balance and data balance of the GSM SIM Card in my USB modem (Mobile broadband dongle)?
These are some Apps with USSD balance check support:
Prepaid Manager is an applet for the GNOME Desktop that allows you to check and top up the balance of GSM mobile prepaid SIM cards. It is a simple and minimalistic app with USSD balance check and topup being all that it does. But on the flip side, it is a very dated application and haven't received any new updates in a long time. And if your provider isn't supported, you'll have to manually configure it as described on their homepage. To install, click here:
Or run the following command:
sudo apt install prepaid-manager-applet
Modem Manager GUI is a complete solution to manage and monitor mobile network based modems. It packs quite a lot of features, and USSD support is just one of them. For a complete list of features, visit their official homepage. To install, click here:
Or run the following command:
sudo apt install modem-manager-gui
V Mobile Broadband is the original Vodafone Mobile Connect software for Linux rewritten to be compatible with Network Manager by Vodafone's open source Betavine Connection Manager team. Unfortunately, it doesn't seem to be very actively maintained at the moment and isn't available in Ubuntu repos. However, you may try your luck building the project from source. Check out their GitHub page.
Warning: v-mobile-broadband depends on wader, which replaces Ubuntu's default modemmanager. So, if you encounter problems with the new setup and decide to uninstall v-mobile-broadband, don't forget to reinstall modemmanager package.
