At the same time, press the interactive button and the power off button of Apple's mobile phone to take a screenshot.
Click the screenshot at the bottom left of the screen.
Click the plus key in the lower right corner of the screen.
Click on the blank box.
Select the area to be occluded.
Click the penultimate icon at the bottom of the screen.
Select the All Black box.
Click Finish in the upper left corner of the screen.
Finally, click Save to Photo.