I have used and promoted Signal before, and I also made the mistake of making it my default sms/mms client. I'm on android. Signal does allow you to make a back

I have used and promoted Signal before, and I also made the mistake of making it my default sms/mms client. I'm on android. Signal does allow you to make a backup file. Then you have to get that file over to a specific directory on the new phone BEFORE you install signal. But the import rarely works. There are tons of issues on the signal repo, and a lot of them closed with won't fix type answers. I myself am stuck with a history of some signal, but mostly sms messages trapped on one phone because the backup the signal app creates fails halfway through importing on other signal apps. Even if it was reliable, it's way too complicated for most people. People change phones every few years and they expect their data to follow them to the new phone. There's also https://github.com/xeals/signal-back https://github.com/xeals/signal-back which actually uses the same code as signal to essentially export a backup. If you check their issues page, you can see that most of the issues are problems reading the backup file. Since this tool is using the same code with just a command line wrapper, it gives us more insight into how unreliable the backup and restore functionality of signal is.