First, turn on the Bluetooth function on the mobile phone and set Bluetooth to be detected by all Bluetooth devices nearby. Before connecting, you need to pair with the Bluetooth of the vehicle. The default pairing password is 0000 or 1234. After the pairing is successful, you can connect with your mobile phone via Bluetooth.
Bluetooth (English: Bluetooth) is an open communication technology standard for wireless data and voice communication. Short-distance wireless connection based on low cost is a special short-distance wireless technology connection for establishing communication environment for fixed and mobile devices, which is widely used in telecommunications, computers, networks and consumer electronics products. Bluetooth enables some portable mobile devices and computer devices to connect to the Internet without cables, and can access the Internet wirelessly. The frequency band of Bluetooth is 2400_2483.5MHz (including the protection frequency band).
This is a 2.4GHz short-range radio band, and it is an industrial, scientific and medical (ISM) band that does not need permission (but is not unregulated) on a global scale. Bluetooth uses frequency hopping technology to divide the transmitted data into data packets, and transmits the data packets through 79 designated Bluetooth channels. The bandwidth of each channel is 1MHz.
Bluetooth 4.0 uses a spacing of 2MHz and can accommodate 40 channels. The first channel starts at 2402MHz, with one channel per 1MHz, reaching 2480MHz. Using the adaptive frequency hopping (AFH) function, it usually hops 1600 times per second.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)