Change picture on background app page?

Hello~ Click on below…

Change the wallpaper on iPhone - Apple Support*

*Change the wallpaper on iPhone

On iPhone, you can change the wallpaper on the Lock Screen and the Home Screen. You can set your wallpaper in Settings or through the wallpaper gallery from your Lock Screen. See Create a custom iPhone Lock Screen.

Click on the Home screen picture (circled below in red) and proceed. Post back for further information if needed.

~Katana-San~

Hold on your Lock Screen, choose a wallpaper you’ve already made or select the + to add a new one, upload your image and set as your new wallpaper.

Learn to: Change your iPhone wallpaper - Apple Support

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Change your iPhone wallpaper - Apple Support