On a mobile device, notifications deliver a uniform short vibration. This sensation alerts the user regardless of the screen's state.
Alerts from messages, apps, and system events produce the same vibration during routine interactions. The feedback blends seamlessly into daily device handling.
Examination of vibrations from separate sources shows variation. One alert pulses in short bursts, another sustains a prolonged buzz.
The single vibration pattern previously common to all notifications no longer applies. Each type of alert now carries its own distinct feel.
Device notifications continue to function as before, with the change in vibration present only upon close observation.