How does Huawei mobile phone scan paper documents into pdf?

Huawei mobile phones scan paper documents into pdf as follows:

1. After turning on the camera, click the first icon (square icon) in the upper left corner to enter the intelligent vision.

2. Then on the left, find the document and scan it, and then click Enter.

3. Align the document and touch the shutter button to scan.

4. Click the checkmark in the upper right corner, and then click Save Scan.

5. Open the gallery and enter the scanned photo album.

6. After selecting all scanned files, enter more in the lower right corner.

7. Enter to print or generate a PDF document.

8. Click on the four points in the upper right corner to save as a PDF. After entering the file name and selecting the saving location, click the tick in the upper right corner to save it as a PDF document.