How To Resize Image For Phone Wallpaper. Adjust the iPhone Wallpaper Size. The height will change proportionally and it will not be 1080px.
Go to the Gallery app and look for the image you want to resize or reduce the picture size. Use the status bar as a guide and adjust the resize handles the little white squares displayed on the corners and mid sections of the border of the photo so that the exact screen resolution of your screen is selected. Adjust the iPhone Wallpaper Size.
Adjust the iPhone Wallpaper Size.
To turn it off tap the Perspective Zoom button. You have options like pixel millimeter centimeter and inch. How to resize photos on iPhone and iPad. You can resize the image and change its width to 1920px.