I have nothing against Signal. I just don’t have access to a phone number right now. I fully intend to use the Signal when I get a number. I know there is no silver bullet, no absolutes in the privacy world but I’m looking for any messengers that are generally considered to be private and secure on Android that I can try to convince my friends and family to use. I have a mid - low threat model, it’s just the thought of giving the Zuck anymore of my family’s data makes my skin crawl.
Simplex, element(or most matrix compatible messengers) session, bchat. If the goal is to get your family to switch over though good luck.
Self host your own istance of Matrix
I guess Matrix would be your best option then. I use Schildichat as client, which is a fork of Element with some extras.
But if you can’t get a plan, why not get a prepaid burner SIM? You can buy a prepaid card for minimal amount and you generally keep the number at least for a year, and you put in 5~10 euro each year you can keep it active endlessly.
A lot of things require a phone number. Here, the goverment needs you to have one, but also most workplaces and even the DHL. Getting a cheap trow-away sim isn’t a bad option. Especially since pre-paid SIMs aren’t connected to your name like those on a plan are.
Session
Try Conversations https://codeberg.org/iNPUTmice/Conversations
You could try Session. It makes a session ID like this . This can be used to contact people or for people to contact you. I’ve used it to talk to my SO a bunch of times.
ive heard briar and session are good
I have used Matrix; XMPP; Session and Jami. I like all of them but use Matrix the most as my wife prefers it and I message her the most. I have heard good things about Delta Chat but haven’t gotten around to trying it yet.
Protonmail? Matrix?
Isn’t ProtonMail an email client? Correct me of I’m wrong. I do use Tutanota to subscribe to all my Newsletters. A few other people mentioned Matrix so I’ll check that out.
If you have to give up your phone number to register why would you get Signal over Telegram? All the people you aren’t supposed to talk to are on Telegram and not Signal, so if you’re giving up your phone number, why pick Signal? Because it’s FOSS? What’s the difference in outcome? Both end in a phone number request from the government that the service will comply with.
Aside from signal I would say your options are Simplex or Briar.
briar is pretty decent. no voice/video, but solid and quite private with multiple ways of getting messages out in hostile network environments.
edit to say: its also completely p2p using Tor rendezvous points with no centralization at all.