Disable wallpaper switching from lock screen

Hello MikeDS2017,

Thank you for reaching out in Apple Support Communities. It sounds like you may have Photo Shuffle for the wallpaper on the Lock Screen of your iPhone. If this is the case and your iPhone is updated to iOS 16, you can adjust the wallpaper by following these steps:

Edit a Lock Screen

After you create a custom Lock Screen, you can make changes to it.

1. Touch and hold the Lock Screen until the Customize button appears at the bottom of the screen.

2. Swipe to the Lock Screen you want to edit, then tap .

3. Do any of the following: 

- Choose a wallpaper: Tap an option in one of the categories (for example, Featured, Suggested

Photos, or Photo Shuffle) or tap a button at the top of the screen (Photos, People, Photo Shuffle,

Emoji, or Weather). If you want to add a photo to your Lock Screen, see Customize your Lock 

Screen photo.

- Add widgets: Tap the box below the time, then tap the widgets you want to add.

- Select a photo style for a Lock Screen with a photo: Swipe to change the color filter (for example,

Vibrant, Tone, Deep, and Vapor), the background for the photo (Natural, Black & White, Duotone,

Color Wash, and so on), and the font for the time.

- Add a multilayered effect for a Lock Screen with a photo: Tap  at the bottom right, then

choose Depth Effect (not available for all photos).

- Change the Focus: Tap Focus near the bottom of the wallpaper, then choose another Focus from

the list.

- Change the style of the time: Tap Customize, tap the time, then select a font, color, and shade by

tapping .

Note: You can also add new wallpaper in Settings .

These steps are outlined in this helpful article and can help: Personalize your iPhone Lock Screen - Apple Support

If this is not the issue you're experiencing, please provide us additional details of how the wallpaper is switching. This way the community can gain a better understanding and provide you the best support.

Kind regards.