How to Delete the Wallpaper on the Lock Screen of an iPhone
When an iPhone isn't in use for a specified period of time, the "Lock Screen" appears. This screen is intended to prevent accidental tapping which could initiate unwanted actions, such as deleting an application or making a phone call. The lock screen consists of a slider for unlocking the phone and an image --- also known as a wallpaper. The iPhone comes with a standard wallpaper consisting of an image of the Earth. Although you can't delete the wallpaper altogether, you can switch it with another wallpaper or a photo saved on your phone.
Tap on the "Settings" icon.
Tap on "Wallpaper" from the "Settings" menu.
Tap on "Wallpaper," "Camera Roll" or one of your custom albums.
Tap on the image you want to use as your new wallpaper.
Pinch or drag the image with your fingers to reposition it.
Tap the "Next" button, located on the tool bar.
Tap on the "Set as Lock Screen" button from the pop-up menu. Alternatively, you can tap on "Set as Both" to use the wallpaper for your lock screen and your home screen.
Press the "Home" button to exit settings.
Tips & Warnings
- If you don't want any wallpaper at all, your other option is to turn off the lock screen. To do this, tap on the "Settings" app, then "General," "Auto-Lock" and "Never."