4G Backup Service

This is only available when using Smart Modem Gateway (VX420-G2H) on our nbn® services supplied before 13 August 2025.

Whenever your modem’s 4G light is lit, that means your modem has automatically connected to the 4G Backup service because your nbn service is unavailable, such as during initial setup or network maintenance.

Your nbn Phone will not work while 4G Backup is in use.

 

Once you're connected to nbn, if you notice the 4G Backup service has turned back on for an extended period of time:

• Restart your modem.
• Make sure your modem is plugged in correctly for nbn.
• Contact us if the issue persists as we may need to investigate.

Terms & Conditions

• 4G Backup is a complimentary service that provides an interim internet connection using our 4G mobile network. 
• 4G Backup is only available; 
  • In select 4G Network coverage areas. 
  • Using our Smart Modem Gateway with an embedded 4G-capable SIM card (this SIM must not be removed from the modem). 
  • When supplied with a compatible iiNet nbn® broadband plan. 
• Subject to availability, you will be able to use 4G Backup; 
  • Once you have received your Smart Modem Gateway, until your nbn® service is fully activated or for a period of 30 consecutive days (whichever occurs first). 
  • If you lose connection to iiNet nbn® broadband during confirmed local nbn® faults (excluding mass nbn® outages). This is until the fault is resolved or for a period of 30 consecutive days (whichever occurs first). If we seek your co-operation in restoring your iiNet nbn® Service and are unable to obtain it then we may temporarily bar or restrict the 4G Backup service until we successfully contact you. 
• Maximum speeds of 12/1Mbps apply to your 4G Backup service. Service performance varies depending on network coverage and your location, with speeds likely less than the maximum. 
• Our Acceptable Use Policy applies.