First, turn on the mobile phone camera;

Click the "Optimize Picture" function;

On the picture selection page, click a picture to open it;

Click "Blurred Background" at the bottom;

Select the circular blur first, and the effect is as shown below;

The figure shows the minimum and maximum fuzzy range of circular blur;

The effect of selecting' line blur' is similar to that of a circle;

Click the green tick in the lower right corner to complete the production;

Finally, as shown in the figure, click Save.