What Bluetooth is used for

Bluetooth is often used to pair mobile devices with other mobile or fixed devices. Examples are your earbuds, your car, and your smart fridge even your printer or mouse to your computer. Because Bluetooth and Wi-Fi are often complementary, working at the same time and offering much the same connectivity, you may not always know which hardware is pairing with which devices. Just know that if in range, devices previously paired via Bluetooth will try to automatically connect.

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