Possible reasons for disconnection include over distance disconnection, turning on or off the phone's Bluetooth, or ignoring the device in Bluetooth settings.
1. Please confirm if the device connected to the Bluetooth system has a Xiaomi Smart Band 8. If so, please tap to enter and ignore the device before connecting;
2. If there is a remote disconnection or device restart status and the app shows that the device is being connected, but the connection is not successful for 5 seconds, please try manually connecting or clearing the app to re-enter the app;
3. It is recommended that you switch Bluetooth on and off again in your phone settings and then re-enter the app to check if the connection is successful;
4. After the iOS phone is connected to the device and the device is unilaterally restored to the factory, the iOS phone system Bluetooth will try to connect back to the device, and the probability of a new phone not being found (iOS phones will always be disconnected from the device, and during the connection period, the new phone cannot be found; during the disconnection interval, the new phone is just in scanning mode and can be found). You need to enter the iOS mobile system Bluetooth, find the corresponding connected device, and ignore this device. At this time, use the new phone to search for paired connections.