AFAIK I must connect it to Android or iOS before I can use it.

I don't think so, you could use the official Linux build as far as I know. I think it needs a phone number but not necessarily a mobile device. I might be wrong though.

It required to scan the QR code from a "mobile" app last time I tried.

(You really have a lot of free time to write unsubstantiated dismissals to all my posts.)

> It required to scan the QR code from a "mobile" app last time I tried.

Are you against using an Android (or LineageOS) emulator to do so?

> (You really have a lot of free time to write unsubstantiated dismissals to all my posts.)

You pop up in a lot of threads I'm interested in and seem to say a lot of incorrect things, that's all.

> Are you against using an Android (or LineageOS) emulator to do so?

1. It's annoying and inconvenient.

2. It's the result of an artificial restriction by Moxie, for which I can't see any good reason, making me suspicious. In my opinion, this is basically an attack on true mobile freedom.

3. I do not believe in a good app isolation of Waydroid, so I would prefer to use as rare as possible. I also do not trust Android too much. And I will have to run two Signal apps simultaneously.