You cannot use it with EVERYONE though, can you? Signal requires Google Play Services and is refusing to remove that dependency - leaving out all those users who cannot install Google Play Services, either for privacy reasons (as moxie calls them: &quot;cryptonerds&quot;) or because they live in countries where Google is banned (all of China for example).<p>LibreSignal folks are willing to do the work for removing that dependency on GCM but Signal won&#x27;t federate with them.<p>OTOH, moxie does have a point. They&#x27;ve tried federation with Cyanogen and the experience was painful.