If you having an issue with facebook messenger not working then you can easily fix your issue by restarting your phone and clear cache for messenger. If you are using wifi then you can Turn off Wi-Fi and turn it on again, Enable Background data.
If you need to know more solutions then you visit our website to get your answer.
read also: https://ityug247.com/how-to-recover-deleted-messages-on-facebook-messenger/