Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use a bluetooth device [title] Understand how bluetooth works. [step] Bluetooth is a wireless technology that allows two different devices to connect. Every bluetooth device has one or more profiles installed.

Ending1: For example, you have a facebook messenger account, your mobile device has a pms account, and your business has a apple account. [title] Download the app that you want to use for personal calls. Ending2: To connect, press and hold the home button of the device you want to connect to. This will prompt some options, such as " disabled, " " regular, " or " local. Ending3: The profiles feed is outlined in the settings panel and is a snapshot of the most commonly used devices. [substeps] Connect a bluetooth cable to one of your devices and turn the device's bluetooth feature on to available. Ending4: These profiles determine what the device is capable of, such as " hands-free " (mobile headsets) or " human interface device " (computer mouse). In order for two devices to connect, they must both have the same profile.

Answer format: ending1/ending2/ending3/ending4