How to change the SMS interface of iphone

Method 1: Click the photo on the desktop-select a picture to be set as wallpaper, ☆ Tap the picture, then select the logo box with arrow, then select it as wallpaper, then zoom the picture to adjust the position, and then choose whether to set it as lock screen or home screen or both. . it doesn't matter

Method 2: Set-brightness and wallpaper-then select a picture and repeat the steps after ☆ in method 1.