Facebook Messenger SMS is a feature that allows you to send and receive text messages from your Facebook friends on your phone. If you don’t want to use this feature, you can turn it off. To turn off Facebook Messenger SMS, open the Facebook Messenger app and tap the menu icon. Scroll down and tap Settings > Notifications > SMS. Toggle off the switch next to Facebook Messenger SMS.
Video – How To Turn Off Facebook Messenger Sms
Once you have turned off Facebook Messenger SMS, you will no longer be able to receive text messages from your Facebook friends on Messenger.