Since this community was partially inaccessible due to a long standing bug in Lemmy, we moved to a new XMPP community here instead: !xmpp@slrpnk.net
XMPP/Jabber is the community-owned standard for real-time federated messaging.
Multiple device use needs no special setup, but given the inherent forward security of OMEMO, new devices will not have access to old messages.
You can make backups of your decrypted chats through the settings menu in Conversations.
Making a backup of the keys is unnecessary as they should be treated as device specific and not transferred between devices.
Encrypted chats??
As u said keys are diff on diff device how they will sync in real time?
Yes, you can have multiple keys from different devices active. Try sending a omemo encrypted message from the device you have problems decrypting from, as sometimes it needs such a trigger to sync public keys.
What doesn't work (by design) is to add new devices and sync old history.
Edit: Also, all chats are encrypted via TLS, omemo just adds additional e2ee which isn't really needed if you use a trusted server, ideally your own.
Oh so If I chat with someone on mobile there are no ways to get it in pc?
? Of course you can. It works automatically without problems.