Here are some great open-source alternatives to IOS and Android.
European:
- Ubuntu Touch Germany 🇩🇪
- Postmarket OS Europe 🇪🇺
- Sailfish OS Finland 🇫🇮
- Manjaro Arm Germany 🇩🇪
- /e/ OS France 🇫🇷
Non-european:
- Graphene OS Canada 🇨🇦
- WebOS South Korea 🇰🇷
Come join us at !linuxphones@lemmy.ca to discuss building up the alternatives.
I agree with you fully except I wouldn’t recommend Calyx. I don’t think it’s worth installing over stock tbh and way closer to LineageOS than Graphene in terms of security. The best alternative to Graphene was DivestOS, well at least until a few months ago when it was discontinued.