i am currently running home assistant on android via termux. It works great and installs easy in a virtual enviroment . but so far cant get bluetooth tracking to work . and this is home assistant not hassio so no add ons , config file is a litle tuff to set up for editing as well . just fyi if planning on triing the android route haven’t given up yet but not sure bluetooth is going to work that way because cant seem to install pybluez or bluetooth. there is tons of info here,
i cant attest to mosquitto but have node red running as well on android.