In order to blur the background of the previous photos, it is necessary to process the photos taken through the APP that beautifies the photos.
It would be much easier if there was an R 1 1.
Click the camera on the desktop to enter.
Directly use the rear camera, click on "Portrait"-when the words "Depth of Field Effect" are displayed in yellow, then take a photo to blur the background.
If you want to blur the background of the selfie, first switch the camera to the front, then click the blur (depth of field effect) icon and take another picture, and it will have a blur effect ~