Hi, I’ve been looking for a “Device”, like a “travel router” that has a Wireless Client Mode which I can use to bridge a smartphone’s hotspot to the device’s ethernet port which then plugs into the WAN port of a router as a manual method of a failover / backup internet source.

Background: I have business clients that have only one possible ISP - usually cable: Optimum or Spectrum and when that goes down, credit card processing and cloud POS like Toast or Square, etc. are down. I want an easy method to allow them to turn on their phone hotspot, then the “Device” connects to the hotspot, they unplug the cable modem WAN cable on their router and plug in the “Device” ethernet and are back up and on the Internet.

I know there are many “travel routers” and regular routers out there that do that kind of thing. What I’m hoping exists is something that either:

a) has a little touchscreen on it that would allow you to punch in the wifi password to connect it to a hotspot without connecting a laptop to the ethernet port and going to a web interface, or,

b) works off of an app, connecting maybe with bluetooth, or a secondary wifi to configure the device with the proper ssid and pw.

thanks in advance for any help!