After downloading your favorite wallpaper, you need to set it up on your phone to display it as wallpaper on your phone. You can go to "Settings" - "Wallpaper" - "Choose a new wallpaper" - "Settings" to set your favorite picture as the wallpaper, or you can directly go to the "Photos" app to select a photo to set it.

Specific steps:

1. Click "Settings" on the phone and find "Wallpaper" in the settings;

2. Then click "Select New" "Wallpaper";

3. Then click on the album where the wallpaper you want to set is located;

4. Then click on the picture to preview the effect;

5. Then click on Set Once set, you can set it as wallpaper.

6. After the settings are completed, the picture you selected will become your wallpaper.

7. You can also find the photo you like directly in the photo application, click the "Share" button in the lower left corner, and then click "Use as Wallpaper" to set it directly as wallpaper.