1. Click the "printer" circular icon in the navigation bar at the bottom of the homepage of mobile phone software, and you will be prompted that the device is not bound. Please bind the device first, and click Unbind.

2. click bind new device.

3. The system asks if you agree to use the camera to take photos and scan, and click OK.

4. according to the system prompts, double-click the D1 button of the printer device to obtain the device QR code to be scanned by the binding device.

5. Put the QR code in the box and scan it automatically.

6. The system prompts that the binding is successful.