Getting a new phone for the holidays doesn’t mean giving up Signal message history. Restore old messages on a new phone using Signal Secure Backups or device-to-device transfer.

https://support.signal.org/hc/en-us/articles/10074659364122-Backups-and-Device-Transfers-on-Signal

Backups and Device Transfers on Signal

Signal offers several secure options for backing up or transferring your messages, depending on your device and situation. Signal Secure Backups are an optional, secure backup solution that store y...

Signal Support
@signalapp An option for backup to a common cloud provider is a must. Please integrate with Nextcloud, or at least give an option to backup via something like WebDAV.