Enabling/Disabling All Internal Cellular Modems
You can enable and disable all internal cellular modems from the Web Interface.
Click Networks on the sidebar.
Select the Interfaces page.
Interfaces screen
From the Display dropdown, select Modem.
Display dropdown
Check the checkbox at the top left of the list to select all Modem interfaces.
Selected modems list
Click the Enable or Disable buttons. This action will be applied to all Modems.