Final answer:
To set different wallpapers on an iPhone's lock screen and home screen, go to Settings > Wallpaper > Choose a New Wallpaper. Select a picture and set it as the lock screen, and then choose another image for the home screen.
Step-by-step explanation:
Customizing your iPhone to have different wallpapers for your lock screen and home screen is a straightforward process. To start, open the Settings app on your iPhone. Scroll down and select Wallpaper, then choose 'Choose a New Wallpaper' to access your photo library or Apple's built-in wallpaper selections.
Once you have selected a wallpaper, you will see the option to set it either as your lock screen, home screen, or both. If you want different wallpapers, select the image for your lock screen first and choose 'Set Lock Screen.' Then, repeat the process for your home screen by selecting a different image and choosing 'Set Home Screen.'
Keep in mind that if you want to use a Live Photo or a video as your wallpaper, they can only be set on the lock screen. Moreover, the placement and zoom level of the wallpapers can be adjusted by pinching and dragging the image before setting it.