What is Bluetooth and how does it work?

Bluetooth is like an invisible radio link between two devices. Your phone uses it to talk to your earbuds, your car's speaker, or your smartwatch without needing wires or the internet. Both devices have to agree to connect once (called pairing), then they recognize each other forever after.

Bluetooth is a wireless technology that lets devices communicate over short distances using radio waves. Unlike WiFi, which connects you to the internet through a router, Bluetooth is just two devices talking directly to each other. It uses very little power, doesn't need the internet, and is built into almost every modern device. Once you pair two devices, they stay connected whenever they're near each other.