@si2mev @ralphcrutzen @GrapheneOS I've been on GrapheneOS for years, and unless things have changed since I moved everything out of Google and into self-hosting, getting my contacts and calendars into GrapheneOS was as easy as exporting it all from Google, and importing it into GrapheneOS. Only about 3 months later I deployed a radicale instance in my server to use davx5 on my phone and synchronize my tasks, calendars and contacts, but before that, I just kept the exports in my computer.