If you're not satisfied with the image that's currently your iPhone's lock screen wallpaper,
vyou can change it to something that's more your style.
Here's how to change your lock screen wallpaper on an iPhone running iOS 16 or later.
First, open the Settings app on your iPhone. Scroll down and tap Wallpaper.
On the next screen, tap Choose a New Wallpaper.
You can now choose whether to select a new wallpaper from Apple's stock image library, or to use one of your own photos.
If you choose the latter, select the album that contains the photo you want to use.
Once you've selected an image, tap Set. You'll then be asked whether you want to set the wallpaper as your lock screen,
home screen, or both. Select Lock Screen only, and tap Set Lock Screen.
If you're not satisfied with the image that's currently your iPhone's lock screen wallpaper,