Signal is better than telegram but just a little bit. Honestly people should be using Signal if anything as it is better than many other popular platforms like WhatsApp and regular SMS.
It does, but it's in a very malicious fashion. You need to activate something called "Secret Chat" for a given chat conversation. Only then is it E2EE. Otherwise, it's unencrypted like discord n stuff.
I'm going to come off as retarded but I have to ask: when did Signal get this bad rep? I remember not too long ago that it and Telegram were praised for their privacy practices. What happened for that to change?
You can 7-zip it with a password. That's pretty simple to do and use - you only need an archiving program that supports it and can send that file and share the password.
You could share a link to the image if you hosted a drive or photo sharing service yourself. Otherwise, I guess there's Signal or telegram secret chats.
simplex is a relatively new chat app but it's evolving pretty fast, i suggest it too, but it has several bug and missing feature that need to be fixed and added in order to make it like a standard chat application
the call will close if you go back to the chat (they should fix that in the next version)
it does not ring while you call
it can only be synced to a one desktop via the wifi
it has only local notification system (due to security reasons)
the calls are pretty susceptible to the line stability
but seems the only real secure chat app out there, you can check out the roadmap in the description of GitHub
I have used SimpleX Chat for a few months and the following made me switch to XMPP:
It literally drains my battery on my Google Pixel 6a with GrapheneOS. I had to charge my phone 1 time per day. Before and now after, I only need charge my phone 1 per 2 days.
It is "impossible" for me to connect SimpleX Chat on Linux. Haven't tried on Windows because I don't use that shit due to privacy reasons.
If you're in a voice call and goes back from the call to send something in the chat (like a picture), the call will end. You are not allowed to use the chat while you're in a call in SimpleX Chat.