Measurements on Mobile Phone Wireless Communications

It is well-known to the research community that the range of Bluetooth class II devices is 10 m. However, the authors have observed that it is at least 20 m for device and service discovery. To better understand this observation, they perform extensive experiments to test Bluetooth communications. They implement programs in Java ME on real-world Nokia N82 Smartphones that test Blue-tooth device inquiry. Their experimental results verify that the range of class II Bluetooth devices is at least 20 m for device and service discovery.