Yes, you can connect a 4G router to another router. This setup is often used to extend network coverage or to provide redundancy in case one connection fails. Here's how you can do it:

Connect the 4G Router to the Primary Router: You can connect the WAN (Wide Area Network) port of the 4G router to one of the LAN (Local Area Network) ports on the primary router using an Ethernet cable. This allows the 4G router to access the internet through the primary router.

Configure the 4G Router: 

Access the settings of the 4G router through a web browser using its IP address (usually mentioned in the user manual). Set up the connection mode to "Bridge" or "Router" mode depending on your requirements. You might need to enter APN (Access Point Name) settings provided by your mobile carrier.

Configure the Primary Router: 

Access the settings of the primary router and configure it to work with the 4G router. This might involve setting up a new VLAN (Virtual Local Area Network) or ensuring that the DHCP (Dynamic Host Configuration Protocol) settings don't conflict with those of the 4G router.

Test the Connection: 

Once both routers are configured, test the connection to ensure that devices connected to the primary router can access the internet through the 4G connection.

Keep in mind that while this setup can provide backup internet connectivity or extend network coverage, it may introduce additional complexity and potential points of failure. Make sure to secure both routers with strong passwords and keep their firmware up to date to minimize security risks.



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