How does Bluetooth work?

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Bluetooth works by sending info over high-frequency radio waves also operates inside the industrial, scientific and medical radio bands. It functions between the 2.4 and 2.485 GHz frequencies, similar to many Wi-Fi devices do, which can cause interference problems when both techniques are operating concurrently or when multiple devices are working within an identical place.

Where Wi-Fi operates asymmetrically Bluetooth usually works symmetrically, with one Bluetooth device connecting to another. Even though up to eight devices can be connected on a single personal area network, in case of mobile phones, it generally means connecting two handsets together for document transfers, or one smartphone along with a Bluetooth speaker. 

Unlike Wi-Fi, Bluetooth connections don’t use up your cellular data bundle because they are not transmitting information over the airwaves at the exact same way.

Bluetooth is exclusively device to device transmission with no intermediaries. Bluetooth generally operates over short distances to save energy. Although it’s possible for Bluetooth to run within a 100 meter array, that’s very uncommon, with the majority of devices typically functioning within 10 meters of one another. To create snooping on its radio transmissions harder, Bluetooth utilizes adaptive frequency hopping spread spectrum that automatically change the radio frequency as much as 1, 600 times per second.

Data transmitted is divided into packets and after that transmitted across the randomly selected channels, avoiding any which are particularly busy. This is one region which has been improved through generations of Bluetooth technology.

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