ArdexaLinux has full support for USB tethering with Andoird and iOS.
Once your ArdexaLinux device is powered on, simply connect your phone to the device using a standard USB cable and then enable USB Tethering on your phone. USB Tethering is usually found in the "Hotspot & Tethering" section of your phone's Network & Internet Settings.
Once enabled, please wait a few minutes while the device detects the new interface, establishes a connection to the internet and then the Ardexa Agent should automatically connect.
Once the Ardexa Agent is connected, you can proceed to Network Configuration using the Ardexa Cloud: https://ardexa.zendesk.com/hc/en-us/articles/360000374776