ELi5 | SM on Instagram: "The old vibration motors in phones used a small rotating mass that simply spun around to make the phone shake, much like a washing machine drum getting unbalanced and rumbling the whole machine. This created a basic, loud, often rough buzz that was the same every time, mostly just to grab attention for notifications. In contrast, the new Taptic Engine found in many modern smartphones uses a more precise and advanced system called a linear resonant actuator, which moves u

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