No Vibrating on Silent on all apps and An Apple Community This video shows how vibration works inside a cellphone through a small but powerful internal motor. When the phone is set to vibration mode, electrical current activates a tiny motor with an How To Make Your Phone Vibrate on Silent Old iPhones Had Their Own Vibe , That classic vibration sound instantly brings back another era of phones. , Before silent haptics became smoother, every alert had a sharper personality you could