Download Signal from your app store, open the app, and follow the setup instructions to link your phone. For Windows, link Signal Desktop through the app's settings.

Yes, Signal is completely free. It is supported by donations and does not contain ads or in-app purchase requirements.

Signal automatically encrypts all messages and calls using the Signal Protocol. No extra setup is needed for encryption.

Yes, you can create group chats up to 1,000 members, and manage who can post and administer the group through group settings.

Tap the call icon within a chat to start a voice or video call; all calls are end-to-end encrypted for privacy.

Share photos, text, or videos that disappear after 24 hours; adjust privacy settings to control who can view your Stories.

Yes, Signal on Windows links with your phone, allowing you to stay connected across devices. You can link desktop via Signal Desktop app.

No, Signal is free and open source. It does not offer paid plans; all core features are accessible without charge.

Check your internet connection, ensure the app is updated, and verify your phone number verification in Settings > Privacy.

Visit https://support.signal.org/ for help or to report problems, and access community help and FAQs there.