用英语描述亲眼看到的一不礼貌的事件,并说明礼貌的重要性

POlite way is very important in daily communication.
in todays' meeting with GM and other dept,manager,during the speech of GM,suddenly someones' mobile get in coming phone call.for sure the ring are quite smart,but it is not happened in a good time.
GM just hold a second and continue,but this is not the first time we get such impolite issues,for sure that the speech is interrupted and whole team be impacted by this smart ring.
then we know how important to set our mobilephone as "viberation" or just turn off it.