“Urgent SMS” alerts you when you receive a text message containing the keyword URGENT. Simply choose an urgent notification, (something other than your standard text notification) and your ready. You can send an urgent text message through the “Urgent SMS” UI. You can receive urgent text messages from ANY cell phone. All they need to do is prefix the message with the word URGENT. You can also set a preference to override silent mode so you’ll never miss that urgent text during a meeting or class.