your conversations are still tied to Google
That’s simply false. Signal Notifications never include the content of the message or any metadata, no matter if they’re sent over FCM, APN, WebSockets or UnifiedPush (via mollysocket). That wouldn’t even be possible, since the Signal server sending out the notification doesn’t even have the key to decrypt the message. Only the users involved in the conversation have the keys, that’s how end-to-end encryption works. Signal simply sends an empty message via FCM (or any other push system), and the Signal app on your device then receives and decrypts the encrypted message and shows you a preview of the message content as a notification on your operating system.
And every build of the Signal client for WhatsApp also supports WebSockets as a fallback push notification system, in case Play services aren’t installed or can’t be reached. The only reason why FCM is used by default is that it saves some battery, because it only maintains one background network connection for all apps, instead of each app handling notifications themselves.
fushuan@lemm.ee 4 days ago
Their github releases have the apk available so you can manually download it and install it or use obtainium.
github.com/signalapp/Signal-Android/releases
Andromxda@lemmy.dbzer0.com 4 days ago
It’s also available on their website btw: signal.org/android/apk/