MaxMalRichtig

You are right, basically.

However, the backup solution of Signal will basically export the “content & metadata” of the messages into a re-importable format and then bundle everything into an encrypted container. You will get a separate password for that container file that you need to re-import your messages.

As far as I understand it, Signal will then re-encrypt your messages after the import with the key of your new Signal installation.

Wouldn’t be so sure about the 45 days for Signal. Had to do an “emergency” reinstall of Signal at one of my family members. All messages were lost.

However, Signal has a dedicated backup-function baked in that I’ve used before. (See under Settings > Chats) It should just do want you want.

Switching the launcher will almost do ZERO for your privacy. Just to let you know.

Anyhow, you could check out the “F-Droid” App Store, which is populated with the most privacy respecting open source apps out there. It also has some launchers.

Or you could at least check apps on Exodus for trackers.