Signal is seeing a huge influx of users who are switching from WhatsApp, as users want to protest about WhatsApp's new privacy policies, a movement that also got a significant boost when Tesla boss Elon Musk tweeted “Use Signal”. But if you've just started using the privacy-focused messaging application then there are quite a few features that you'll want to know about. Read on to know the best tips and tricks for Signal that will help make the most out of using the app. 1.