Smartphones can tell when to wake you up by using a special tool called sensors that feel your movement. If the phone senses you are still sleeping, it waits a bit before ringing. It’s like a sleepy friend who knows when to call you out of bed.
Examples
- Your phone waits until you're almost awake before it rings.
- You sleep through one alarm, and the next one wakes you right up.
- Your phone feels when you're moving and decides to wait a bit.
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See also
- Why Do Smartphones Feel So Cold When You Use Them?
- How Do ‘Smartphones’ Know Where We Are Without GPS?
- Why Do Smartphones Get So Hot?
- Why Do Smartphones Use So Much Battery When You're Just Watching a Video?
- Why Do Smartphones Get So Hot When You Use Them?
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