A lot of people think that the distress signal is an abbreviation for “save our souls” or “save our ship.” Since three dots form the letter "S" and three dashes form an “O” in International Morse code, though, the signal came to be called an “SOS” for the sake of convenience.
Similarly, it is asked, what does it mean when your phone says SOS only?
Turning on Auto Call for Emergency SOS on an iPhone means that emergency services will be called automatically when you quickly press the power button five times in a row, so the emergency SOS slider will not appear on your iPhone's display.
What is SOS phone call?
You program the SOS button to call one number, which means that even the most simple SOS button phones can be used. We give you this number when you register - it's your “voice alert number” (personal emergency contact number). Or it's a local line number which means it's cheap to call.