How to download Facebook Messenger for Android, Apple and Windows
How to use one of the most popular instant messaging apps in the world.
28 Feb 2019 ... If you don't already have the app on your phone or tablet, here's how you can ... Follow the instructions on how to sign in using your phone number or email. ... Once you're all set up, the app will ask you if you want to allow notifications. If you ... Can I use Facebook Messenger without downloading the app?