Xiaomi Bluetooth speaker original PIN code please try 0000.1234.9999 these three. Bluetooth speaker original PIN code is mainly used in low version Bluetooth chip and Bluetooth module. When the Bluetooth version is relatively low, the Bluetooth connection needs to enter a password, which is convenient for the user to pair, and the original PIN code of the Bluetooth speaker is set by the engineer, which is generally 0000.1234.9999. With the enhancement of Bluetooth technology, in addition to special devices still need to use the original PIN code of Bluetooth speakers, ordinary devices have canceled the design of the original PIN code of Bluetooth speakers, and click on the pairing can be automatically paired, which is convenient for users to use directly.