What is Bluetooth?

You can wirelessly connect two devices, such as a smartphone and a smartwatch or car kit, via Bluetooth. But you can also use it to wirelessly play music from your smartphone on your Bluetooth speaker or to transfer files and photos between two devices. All smartphones nowadays have Bluetooth, and new smartphones have at least Bluetooth 5.0. This version is faster and has a longer range.

Bluetooth 5 is faster in data transfer and more energy efficient compared to previous versions. In addition, the range is longer: devices connect over a distance of up to 40 meters. This is 4 times further than with older versions. This is useful, for example, when you have a number of smart devices connected to each other at home.

Compared to previous versions, Bluetooth 4.2 has undergone a number of usual improvements. For example, Bluetooth 4.2 is more energy-efficient and faster than the previous version. A notable improvement is in security. For example, it's more difficult for unwanted devices to see where you are based on your Bluetooth connection.

Bluetooth 4.0 was also known as Bluetooth Smart when it was introduced. Compared to previous Bluetooth versions, 4.0 is faster. This Bluetooth version is more energy-efficient. For example, do you connect your smartphone to a smartwatch? The batteries of these devices run out less quickly than earlier Bluetooth versions.