1. Three-in-one phone: The three-in-one phone usage model describes how a telephone handset may connect to three different service providers.

The telephone may act as a cordless telephone connecting to the PSTN at home, charged at a fixed line charge. The telephone can also connect directly to other telephones acting as a walkie-talkie or handset extension.

Finally, the telephone may act as a cellular phone connecting to the cellular infra structure.

2. File transfer: The file transfer usage model offers the capability to transfer data objects from one Bluetooth device to another. Files, entire folders, directories, and streaming media formats are supported in this model.

The model also offers the possibility of browsing the contents of the folders on a remote device.

3. Synchronization: The synchronization usage model provides the means for automatic synchronization between, for instance, a desktop PC, a portable PC, a PDA, and a notebook.

The synchronization requires business card, calendar, and task information to be transferred and processed by computers, cellular phones, and PDAs utilizing a common protocol and format.

4. Internet bridge: The Internet bridge usage model describes how a mobile phone or cordless modem provides a PC with dial-up networking capabilities without the need for physical connection to the PC. This networking scenario requires a two-piece protocol stack, one for AT-commands to control the mobile phone and another stack to transfer payload data.

5. Ultimate handset: The ultimate handset usage model defines how a Bluetooth equipped wireless handset can be connected to act as a remote unit’s audio input and output interface. This unit is probably a mobile phone or a PC for audio input and output.