For a new device:Open the "Device" in "Populife" App, Click the "+" icon and follow the guide.
2. For the device that has already been added:Ask current owner to delete the lock in App first, and then you can add it the same way as adding a new device.
Note: If you cannot add the lock normally, the reasons may be as follows:
1. The device is not nearby or ACTIVATED: Please keep the device within 1 meter of your phone and make sure the phone Bluetooth and network are enabled.
2. The device has already been added by others: In this case, the APP can search and find the device, But the device name is gray and no "+" sign appears. Please ask the original owner deletes the device in App or open the device and reset it.