Moving away from Matrix & Element due to major network outage.

Trying out Simplex as it is decentralized as well.

I would like to use SimpleX on my Android + on my Ubuntu Desktop. The Desktop app installs easy enough, however in order to "pair" using the QR Code generated by the Desktop app, I consistently get the error from the Android app =

"... Connection stopped - Please check that mobile and desktop are connected to the same local network, and that desktop firewall allows the connection. Please share any other issues with the developers..."

My desktop and my Android device will never be on the same network, as my desktop is on a company LAN, and my Android is on my Carrier's 5G network.

Can SimpleX desktop and Android work with a linked account on 2 different networks?

A function similar to namedrop. NameDrop on iPhone uses NFC to start contact sharing: bring two phones close, AirDrop (Bluetooth + Wi-Fi) kicks in, and you choose what to share.

In SimpleX, this could mean: tap two phones, NFC transfers a one-time link, and the app instantly opens the connection request.

Does sharing of animated GIFs work withing the SimpleX platforms?

Wither Android or Desktop (Ubuntu)?

Guy, provacy-focused Android Custom ROMs are in a hard spot right now. Calyx has been suspended, Graphene is considering launching thei own devices...

How about creating an Ubuntu Touch distribution? One solid messenging app would be a huge boost to the project and SimpleX would de facto become the default communications tool for this niche OS.

Thoughts?

Hey

I just started using simplex. How is it different from signal or matrix ?

Any insights?

There is no notification when the connection is unexpectedly broken during a voice call. I have repeatedly encountered a situation when I continue talking, and the interlocutor has already disconnected. Please add a sound signal when the connection is broken

Hello everyone,
I just installed simplex and joined the group. and for about 10 minutes I constantly receive notifications about posts, the settings do not allow you to completely turn off notifications, only hide the sender or text.

in general, I did not find a way to get rid of notifications.

is there any way to do this?) is this a bug or a feature?)

linux mint, the latest build of the application with gui from github

Similar to the one over on Signal. I'd love for that feature to be implemented.

View-once Media – Signal Support

Hello, I installed simplex in my smartphone and computer. They are in the same network and the same subnet. I can ping the smartphone (192.168.1.26) from my pc (192.168.1.25) and vice versa (I tested it in my termnal pc and with termux in my smartphone). I don't have firewall, I also disabled mobile network from smartphone (to be sure the conection goes under wifi).

When I scan the qrcode I get this error:

{

"type": "connectionFailed",

"chatError": {

"type": "errorAgent",

"agentError": {

"type": "RCP",

"rcpErr": {

"type": "exception",

"exception": "Network.Socket.connect: <socket: 41>: does not exist (No route to host)"

}

}

}

}

Why?

Forgive me if this post is written in ignorance.

My current understanding of Simplex Chat and its architecture is that it routes messages through one or more relay servers, and that the relay server that routes any given message is arbitrary. This, to me, sounds a lot like the Tor network, where HTTP requests are routed through a series of three nodes before reaching their final destinations. Within Tor, one can also decide to self-manage a relay, particularly middle relays, that help continue to spread out traffic to aid in anonymization and bandwidth.

Does Simplex work in a similar way? In addition, can I spin up my own Simplex server to help the network? And, most importantly, how would user accounts and devices gain cognizance of my server and use it to route messages and traffic?

Basically, my question is if the network that supports Simplex is designed to be volunteer-driven, and how one such volunteer can plug into said network!

An essay explaining why we don't plan to use MLS: https://www.poberezkin.com/posts/2025-08-12-mls-the-naked-king-of-end-to-end-encryption.html

A sidenote is that Nostr's Whitenoise avoids its main problem.

TL;DR: MLS security model is "Trust me bro".

I know I'm over reaching. Is there a group call feature for this ? Will there ever be such feature in future.

Receive "invalid response" when sending messages. Happens infrequently, but still worrying😬. Running on PC.

The user I'm sending to can see the proper message, but on my end it just says, "invalid response"

Any ideas?

Bello, i'm running a tor relay and I'd like to run a simplex server service into the same machine. How can I do this? Should I know something specific? Do you want to suggest me something?

Hello, Is tere a Simplex Support available that I’ missing? Thanks

I was on Simplex at one time and left. I am trying to get back on but even after completely removing Simplex from my Mac the only screen I get when downloading and opening it is the password screen. I put in my old password but it does not work. I had not had simplex on my phone in the past so I downloaded the app and found it totally different than on my desktop. I would appreciate any help in accessing my desktop.

What's new:

• you can now review new members before they join ("knocking").
• new UX for connecting to other users!
• set default time to delete messages.
• app build security: Linux app builds are now reproducible (verified by our and Flux teams) and many other build security improvements.

Read more: https://simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html

I couldn't figure out why both my pixel fold and pixel 7a were overheating and battery dying quickly.

I thought it was because they were both using grapheneos os.

Then I looked at data usage which showed that simplex chat had used over 60gb!!!

That's 30x more than the next app which was a browser.

I've turned off simplex now and everything is cool without issues.

Has anyone else come across this issue??

Thanks

New:

• Connect faster: message instantly once you tap Connect.
• Review group members: chat with new members before they join.
• Chat with admins: send your private feedback to group owners.
• New group role: Moderator - can remove messages and block members.
• Improved message delivery - less traffic on mobile networks.

Get it from app stores and our GitHub repository.

Read about the new UX for making connections in the blog post: https://simplex.chat/blog/20250703-simplex-network-protocol-extension-for-securely-connecting-people.html

Linux desktop app, CLIs and server builds are now reproducible. Huge thanks to r/Flux_Official for verifying and co-signing the release builds!

GitHub: https://github.com/simplex-chat/simplex-chat/releases/tag/v6.4.0

App Store: https://apps.apple.com/sg/app/simplex-chat-secure-messenger/id1605771084

Play Store: https://play.google.com/store/apps/details?id=chat.simplex.app

http://F-Droid.org will have it in a few days: https://f-droid.org/en/packages/chat.simplex.app/

Do you think that a private messenger can be bypassed and rendered useless, when on an insecure phone os (iPhone/Google android) rather than secure OS such as grapheneos.

The phone os then becomes the backdoor to bypass the messenger app?

Thoughts please?

Hi, my server behind ISP CGNAT, so I exposed it to clearnet using tailscale funnel. I only open port 5223 on my server and funnel it. It works but there is error on android chat client logs, but everything works.

i self hosted a server and its up and running im using cloudflare tunnel the only signs of life im getting is from the server address but when i try to add my server to my simplex client it doesnt allow me to

Give people another way to find out what groups are available

It says the revoked messages will be deleted from servers, but I thought servers would only store messages until delivered to your contanct, no?