How to Change Facebook Messenger Notification Sound | How to- Prosyscom Changing Facebook Messenger notification sound is a simple task and here’s how you can do that on Android: Open Facebook Messenger. Hit the profile picture at the top. Tap Notifications & Sounds > Notification sound. In the “Ringtone” popup, choose the one you prefer and then tap “OK.” That’s all. All done. Note: If you prefer to change free call ringtone, then tap “Free call ringtone,” choose the one you prefer and then tap “OK.” I hope that this post is useful to you. If it is, share this post with your friends.