if you have it on vibrate if you like on the main page and get a message it will vibrate and when someone calls it vibrates
but when your on the thread of the messages it wont vibrate
if your on the persons message
and when the sounds on and ur on the message you still get the sound
but when your on the thread of the messages it wont vibrate
if your on the persons message
and when the sounds on and ur on the message you still get the sound