It looks like the ESP32 has a hotspot or “softap” mode which sets itself as an access point for other devices to connect to it. That by itself wouldn’t be as useful, but with a 4G connection things start to make sense. I’m not sure how the routing to the internet via 4G will work with softap mode. I’m still waiting on my Ringo so I can’t do much yet.
Feature Request: 4G hotspot functionality with SSID and passphrase option.
Although we’ve been warned against doing so, if stable enough, my idea is to use this as a minimalist phone, but some remote laptop work using it’s hotspot would be nice.