Signal Private Messenger

Signal Foundation

About this app

Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private.


• Send texts, voice messages, photos, videos, GIFs, and files for free. Signal uses your phone’s data connection, so you avoid SMS and MMS fees.


• Call your friends with crystal-clear encrypted voice and video calls. Group calls supported for up to 40 people.


• Stay connected with group chats up to 1,000 people. Control who can post and manage group members with admin permission settings.


• Share image, text, and video Stories that disappear after 24 hours. Privacy settings keep you in charge of exactly who can see each Story.


• Signal is built for your privacy. We know nothing about you or who you’re talking to. Our open source Signal Protocol means that we can’t read your messages or listen to your calls. Neither can anyone else. No back doors, no data collection, no compromises.


• Signal is independent and not for profit; a different kind of tech from a different kind of organization. As a 501c3 nonprofit we are supported by your donations, not by advertisers or investors.


• For support, questions, or more information please visit https://support.signal.org/


To check out our source code, visit https://github.com/signalapp


Follow us on Twitter @signalapp and Instagram @signal_app

Ratings and reviews

As a private message app it works great. Though in the past I've finding that I'm not receiving a lot SMS messages and sometimes there is a massive delay (months). I've had to revert back to my default message app for SMS and MMS messages, because I can't rely on this app for those. Please have option to be constantly connected to internet to avoid message delays.

Hey, Signal, why don't I get messages directly to my phone as soon as someone sends them, but instead it takes 10-15-20 minutes for the icon to appear that I have a possible message? It happens every time the phone is "asleep". Once the screen is on and in use, everything is fine. But the screen is not on and used 24/7. So what's going on here? I have the latest update on everything, Zenfone 10 - 16GB/512GB box standard and all other apps work without any problems. ???

It is a very secure app /platform to exchange messages and talk free. Full encryption. I opted for it because of concerns about security of other platforms including the most used one which almost everyone was using. Helped me get out of the whole list of my contacts and to end the 24/7 hassle of checking and ignoring others on a platform I had serious reservations about without antagonising others. This is preferred by secure institutions also. I know my data is secure. I'm happy I did it.