I was wondering if there is an Android ROM that only does Hotspot. I see a bunch of LTE devices that are lying around with people that aren't used widely. Instead I would like to install a modded version of Android where all of the services (like calling texting, etc) are removed and it only runs as a networking device. The UI would basically be pretty basic and have all the hotspot settings and information on screen. There are a lot of devices that support LTE but aren't very good performing devices for general use with limited RAM etc. It would be a good idea to reuse these as cheap LTE hotspots since these are more reliable than most cheap hotspots that are sold around (especially in countries like India and China). Also these hotspots are remotely manageable by carriers so that is a privacy concern to. Installing VPN profiles onto hotspot would be an option since it would basically run Android. I will look more into this a prepare a basic version for something in the coming weeks hopefully for a widely popular device. I hope this idea is popular.