Can't add micro SD card to Pinephone

[Zebulon Walton]

That's one of the major problems that I've hit. Having to re-enter contacts each time is a pain, same for calendar alerts. There's probably some clever way of doing this but it's beyond me.

If Manjaro is using Evolution contacts as Mobian Phosh does they are stored in:

~/.local/share/evolution/addressbook/system/contacts.db

...so all you would need to do is back up and restore that file. (That's for contacts, not sure about calendar items, I don't use the calendar.)