Here's the deal: We're in Spain for a couple of months in a place with no wifi included. However, you can get a 12 euro/month cell phone plan* that includes unlimited wifi access from hotspots planted in other customer's cable modems** (this is basically exactly what xfinity does with their xfinitywifi hotspots). However... these hotspots require EAP-SIM authentication. To get around this, I bummed an 8 year old android phone off of a local nephew and have it usb tethered to my laptop (cell data is completely switched off; it's only forwarding wifi). The laptop is then set up as a hotspot.
My question is: Are there any routers that accept a SIM for EAP-SIM verification but don't necessarily have 3g or 4g support?
** Wifi is unlimited and free; cell service is not.