Your account is tied to one device, and the Android version doesn't work on tablets: Your account connects just to one device through your phone number, so you can't use Signal on multiple devices. One-to-one or group messaging: You can chat securely with an individual Signal user or with a group by first sorting those you want to communicate with into a group (by tapping the menu in the top-right corner and selecting New group) and then starting up starting up a chat.Ĭan also send unsecured SMS/MMS messages: If you long-press the blue Send icon, it turns gray, letting you send an insecure SMS message to a contact. You can also chat over Wi-Fi and your carrier's network. Through the app, connect with others through their numbers as well.Ĭhat or make voice or video calls: With the app, you can chat with other Android users as well as those using the Signal app on iOS, Windows, and Mac.
Tied to your phone number: The app uses your phone number to authorize your account, letting you use Signal without having to create a username or password. The app is endorsed by the PrivacyTools.io site. For encryption, the app uses Open Whisper Systems' own Signal Protocol, which is also used by WhatsApp, Facebook Messenger, and Google Allo to encrypt messages.
Secure communications: Signal uses end-to-end encryption to create a secure communication channel between Signal users. The free Signal communications service from Open Whisper Systems lets you hold end-to-end encrypted text, voice, and video chats to keep your messages private and secure.
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