You can use these free EnglishClub wallpapers on your iPhone lock screen and/or home screen.
The easiest way to get these wallpapers is:
1. visit this page on your iPhone
2. long-click one of the wallpaper images below ↓
3. click on "Save Image" (the image is now on your iPhone Camera Roll and you can go to your iPhone Settings to select it as wallpaper)
Alternatively, you can download the wallpaper images below ↓ to your Mac or PC and then copy or email them to your iPhone.