If somebody's in your contacts, you can communicate with them. Once installed, you'll be asked to enter your mobile phone number - it essentially works off that, so it's always tied to your phone number. It's also available on the web in any browser. The app is available for iPhone and Android devices as well as a desktop app for Windows and macOS. WhatsApp is an instant messaging app that Facebook acquired in 2014. What is Signal and how do you use it? WhatsApp rival explained.We've gone over everything you could possibly want to know about WhatsApp to get started right here. If you're already familiar with the basics, then check out our guide to the secret WhatsApp tips and tricks you might not know about. There are also a few hidden features that aren't the simplest to enable. It's wickedly popular and extremely easy to get started using right away, but it does have a few quirks that aren't immediately obvious at first. (Pocket-lint) - There's always a bit of a learning curve when it comes to mastering new apps and WhatsApp is no different.
