Signal Secure Texting App. To use the signal desktop app, signal must first be installed on your phone. Being one of the few apps to claim an endorsement from edward snowden, signal private messenger has made a place among the most secure messaging apps for android and ios users. In addition to direct messaging, the app supports groups of up to 500 individuals, and optional encrypted messaging using the signal protocol.
When signal is your unified messenger: It has strong encryption, it's free, it works on every mobile platform, and the developers are committed to keeping it simple and fast by.
It's my first choice for an encrypted conversation. bruce schneier internationally renowned security technologist.
To remove signal as the default and to switch to another sms/mms app, tap sms enabled to select another app. Chats are fully encrypted by default, as is. A blue letter in the outside column will indicate it is a signal. In addition to direct messaging, the app supports groups of up to 500 individuals, and optional encrypted messaging using the signal protocol.