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The phone's flashlight doesn't just provide light; it can be useful for everything from measuring your heart rate to saving lives
Smartphone Flashlight Use: Most users use their phone's flashlight for lighting, taking photos, and videos, but it can also perform many other functions, including measuring your heart rate.
Some of the handiest tools in your house now live on the phone in your pocket, and a few of them have gotten surprisingly ...
The best flashlights we tested for camping, outages, and everyday use, from compact picks to high-output models.
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