Solved] iPhone Not Vibrating? Here is the Fix iMobie 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 1 Respecting others' space: Loud ringtones and notifications can disrupt public spaces like libraries, theaters, and public transportation. Opting for silence or vibrate mode ensures you don't disturb others trying to focus How To Make iPhone Vibrate In Silent Mode?