Question: My mom wants to use a FOSS operating system on her phone unrelated to Google because she is mad about events of late. Because I'm making Android apps, I don't want to do this on my phone, but does anyone know of any viable Linux based alternatives to Android on mobile?
So far I know about Plasma Mobile and Ubuntu Touch, but I'm not well versed on either, perhaps someone else could point me in the right direction?
@waltznr Look into Lineage with MicroG.
It's still Android, but possible to run without any proprietary google software. MicroG mocks the play services stuff so sideloaded apps will still work.
If it needs to be totally non-android, maybe look into Sailfish OS? It seems much more stable to me than the two you mentioned.
