(Exact steps may vary slightly depending on your device.)

1. Download and unzip the files after purchase

2. Save the images to your Gallery / Photos app

3. Open Settings → Wallpaper

4. (or press and hold on your home screen and select Wallpaper & style)

5. Choose Change wallpaper or Add photos

6. Select your lock-screen images from the Gallery

7. Choose Lock Screen (or Lock Screen & Home Screen)

8. Adjust the position of each image by pinching or dragging if prompted

9. If available, enable Wallpaper shuffle / change on tap

10. Apply or set the Lock Screen