My wallpaper screen is automatically going black on my iPhone

Hello Rahul0608,

Do you have the Always-On Display on? Use Always-On display with your iPhone 14 Pro or iPhone 14 Pro Max - Apple Support

Regarding the issue with the wallpaper, you can try the following solutions:

1. Restart your iPhone: This can often solve many software-related issues. Press and hold the Side button and either of the Volume buttons until the slider appears, then slide to power off. After a few seconds, press and hold the Side button again until the Apple logo appears to restart your iPhone.
2. Check your wallpaper settings: Go to Settings > Wallpaper > Choose a New Wallpaper, and select a new wallpaper. If the issue persists, try changing to a default wallpaper and see if that helps.
3. Update your iPhone to the latest version: Go to Settings > General > Software Update and check if there is a new update available. If yes, update your iPhone to the latest version.
4. Reset your iPhone's settings: Go to Settings > General > Reset > Reset All Settings. This will reset all your iPhone's settings to their default values. Note that this won't delete any of your data, but you will need to reconfigure your settings.

If none of these solutions work, you may want to contact Apple Support for further assistance.