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Re:Poll: Switching from WhatsApp by shiftingleft on Thursday January 07, 2021 @08:55AM (#25671017)
It does have a backup functionality, which unlike WhatsApp's doesn't store your messages unencrypted. It also doesn't force you to use a specific storage provider. If you want to have it synced, you can point your favorite sync client at it.

https://support.signal.org/hc/en-us/articles/360007059752-Ba...

Additionally, they've introduced an optional PIN which you can use to recover profile, contacts and settings when switching devices - without the need to setup sync yourself.

https://support.signal.org/hc/en-us/articles/360007059792-Si...

Re:Poll: Switching from WhatsApp by proactivesvcs on Thursday January 07, 2021 @10:25AM (#25672074)
No backup on iOS, only a live move of Signal data from one working iOS handset to another.
Re:Poll: Switching from WhatsApp by doomrobo on Thursday January 07, 2021 @12:50PM (#25674505)
I have Signal on Desktop and iOS. I would like to save my chat history to an external hard drive. How do I do that?
Re:Poll: Switching from WhatsApp by CDSlice on Thursday January 07, 2021 @01:43PM (#25675303)
Your only option is to export the database from the desktop app and use third party tools like https://github.com/bepaald/signalbackup-tools to decrypt the backup. However in my experience this backup does not include all of your messages and as such there is no way to get your chat history out of this walled garden.