Tech Leaving your phone’s Bluetooth on is a bigger risk than you think. Here’s what you need to know. February 26, 2023February 27, 2023Kim KomandoComments Off on Leaving your phone’s Bluetooth on is a bigger risk than you think. Here’s what you need to know. Bluetooth is a short-range wireless radio technology that allows different devices to communicate. But leaving it on 24/7 can be risky.