Bluetooth scanning is the built-in feature of the Xiaomi smartphone allowing applications and services to scan for nearby devices at any time. This can be used, for example, to improve location-based features and services. After enabling it, your applications can get better location info and provide an improved using experience.
To turn on/off Bluetooth scanning on your phone, please refer to the following steps:
1. Go to [Settings];
2. Scroll down and tap [Location];
3. Tap [Location services];
4. Tap [Bluetooth scanning];
5. Enable or disable [Bluetooth scanning].

Note:
While this feature enhances location accuracy, it also means that your device is periodically scanning for Bluetooth devices, which can improve power consumption. If you’d like to conserve battery, you can choose to disable Bluetooth scanning in your device's settings.