The TotoLink LR1200 is a fairly cheap WiFi access point and 4G/ethernet modem router available in Asia. It's also known as the Zioncom AC1200. It has two web interfaces: a standard interface with all the features available, and a simplified version designed for mobile devices.
Fortunately, there’s an easy way around this. When you open the web interface on Linux, it will redirect you http://192.168.0.1/phone/login.html. Simply change this to http://192.168.0.1/login.html and you will get the full interface. This allows access to some of the more advanced features, such as port forwarding and reading/sending SMS messages from the SIM card in the router.