Bluetooth is a short-range wireless communication technology that enables data exchange between fixed and mobile devices. Generally BR/EDR Bluetooth before Bluetooth 3.0 is called traditional Bluetooth, while LE Bluetooth under Bluetooth 4.0 specification is called low-power Bluetooth.
Bluetooth role:
1, transfer files
Generally will use it to transfer pictures as well as documents. The biggest advantage is not subject to the limitations of the network, but also only suitable for documents, pictures when the number is small, after all, a point to receive or a lot of trouble.
2. Transferring contacts
When you change your phone, you don't need to use the One Click Switch feature if you don't have a lot of important content on your phone. If you just want to transfer the contents of your contacts, you can do so via Bluetooth.
Expanded InformationMain Article: Bluetooth Profiles
To use Bluetooth wireless technology, a device must be able to decipher certain Bluetooth profiles, which define possible applications and specify the general behavior of communication between Bluetooth devices. These profiles include the initial settings for communication parameters and controls. Profiles can save time in re-sending parameters before the two-way link takes effect.
II. List of applications
Wireless control and communication between cell phones and hands-free headsets. This was one of the early popular applications.
Wireless control and communication between a cell phone and a Bluetooth-compatible car stereo system.
Wireless control and communication of devices such as tablets and speakers powered by iOS or Android.
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