After choosing your Region and Service Provider, your carrier
settings should be filled automatically. If you find the setting
information is incorrect, you will need to input it manually.
Generally, most modems work in TTY serial mode. You need to
find out the correct device, e.g. using /dev/ttyUSB2.
Using the USB cable to share network from your smartphone or hostless
modem to the mini router is called Tethering.
Plug your phone into the mini router and click Trust to continue when the
message pops up in your smartphone. Then turn on your phone’s Personal
Hotspot. Choose your phone from the device list and submit your choice.
A newly-added phone will be named beginning with eth.
Some modems work in Tethering (hostless) mode. Please see below: