1. Check if the device is connected to other phone, you can turn off or the phone's Bluetooth first, and then search and bind the current phone again;
2. Try to forget the device in the Bluetooth of your phone. How to: System settings - Bluetooth - Forget the device;
3. If the phone is close to the watch but still cannot be found, you can try to reopen the bluetooth.
4. If the above operations stillcannot solve this broblem, please restart the device and phone and try again.

1. Check if the phone system is: Android 4.4 and above, ios9.0 and above;
2. Check if the device is disconnected by another phone;
3. Check if the Bluetooth of the phone is turned on and can be used normally, it is recommended to turn off all of the apps and restart the Bluetooth before connecting;
4. Some devices cannot be connected normally in low battery conditions.

1. Check if the distance between the device and the phone is too far: the bluetooth connection will be weakened for 7 meters away;
2. Confirm if there is shielding between the device and the phone. human bodies and metal jewelry will interfere with the connection of Bluetooth;
3. Check if the power of the device is sufficient, low power will affect usage.
4. Check If the bluetooth of the phone is normal, it is recommended to close the apps and restart the Bluetooth; 5. After exiting the app, the device will be disconnected. Android system is suggested to open the background operation permission, while IOS system is suggested to keep the background operating;
6. If it's an iPhone, check if the phone is bound to too many Bluetooth devices, please forget several devices in the Bluetooth setting;
7. If the above operations cannot be solved, please restart Bluetooth or the phone.