take fb and messanger off...put fb back on, (only fb) ur message should go through. thats what i did. i ended up taking both apps off n putting back on 3 times b4 it finally started working! n idk whats going on here....i wanna b really mad at Hn because my data jus disappears every month, but, while this fb ordeal was going on here in ga. there was another phone in the home, hooked up to the same wi-fi, n she didnt have any problems. jus me...i thought it was my samsung S3. so weird!!!