It's likely that I'm a bit paranoid about Android phoning home, but there are clearly a few things on Gemini that are a little hinky. Based on an IRC chat comment, I booted Android long enough to d/l Netguard,
https://github.com/M66B/NetGuard .
From a quick look, it seems as if it's possible to break some stuff, possibly achieving the desired result and possibly not.
I'd bet there's someone here who has used it and has some good configuration knowledge/ideas. I'm particularly interested in having my Gemini not transfer information to Google or to China.
Anyone who knows this stuff care to share?