In the past few years, Bluetooth headsets have become must-have accessories for cell phone fanatics. The benefits of these hands-free, wireless devices are obvious, particularly in the wake of state and local laws that require the use of a headset while driving. And just as the number of headsets has exploded, the number of Bluetooth cell phones has increased as well. Integrated Bluetooth is now present in a broad range of cell phones–from high-end smart phones to low-end functional models. Of course, cell phone Bluetooth usage is not limited to just headsets–you can also use Bluetooth to stream music wirelessly, connect to the Web, transfer files, and more.