Vibrate mode with exceptions for certain contacts How to set vibrate only alarm or timer on iPhone with no sound Cool phone tip I just learned You can keep your phone on silent and still hear calls or texts from specific people like family, close friends, or co commanders . Here's Use Case Scenario of the Plus Key This is one of those iPhone features more people should know about! You can set a specific contact(s) to ring through even when your phone is on Silent or in Focus mode. How To Make Your Phone Vibrate on Silent