Are you one of those who want to use Messenger for chat but do not want to signup for Facebook. Good news is, there is a way now. If you are 13 or above and have a valid phone number, you can signup for Messenger without signing up for a Facebook account.
Also See: Mentions and Reactions are added on Facebook Messenger
All you need to do is, download the Messenger app and make sure you click on “Not on Facebook?” option. Signup with your name and phone number, add a photo and you can use Messenger.