What Is Signal, and Why Is Everyone Using It? - How-To Geek
https://www.howtogeek.com/708916/what-is-signal-and-why-is-everyone-using-it/
WEBMar 4, 2022 · Signal is available for Android, iPhone, and iPad. There's also a Signal desktop client for Windows, Mac, and Linux. To join, all you need is a phone number. It's free. The user experience of Signal is just like WhatsApp, Facebook Messenger, and other popular chat apps.
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