How to erase messages on face book - Facebook Social Network

read the terms and conditions of face book use and then see what you have been messaging
no faults contact face book direct and ask them

Turn off notifications on your phone.

you have been hacked
now the hacker knows all about you and all of your face book friends
the simple thing is , if the system is working well for you and the message is not from face book administrators ( you can check with a phone call) then it is an attack on your face book and should be deleted immediately with out opening or reading

you cant d/l 3rd party apps,change it in settings on your phone

just click on the messages you will get your messages

download Opera Web Browser and you won't have that problem anymore. Checktomake sure screen name and password are both correct.

Settings > Notification ringtone. Pick a sound.

got the message box on your face book and click on the message and on the top of the message box you will see a delete button press that button and it will clear your message