It's an artistic picture of colorful trees which captured from special angle. The color combination between the trees and the blue sky can bring a good harmony. This colorful trees phenomena is only occurs in fall season, a season which also known as autumn. Furthermore, this picture also configured in high resolution. The resolution of this wallpaper is 1080x1920 pixels, which also usually known as HD resolution.
Basically, the HD resolution pictures have a configuration of 1920x1080 pixels. This configuration also can be referred into 16:09 aspect ratio, the ratio between the width and the height. But, it's different for mobile wallpapers. The aspect ratio is 09:16 and the pixel configuration is 1080x1920 pixels.
By the way, this cool phone wallpaper is perfect for smartphones with 5 up to 5.5-inch screen size. So, this wallpaper is perfectly matched for most smartphones. Due to give you more collection, here are another similar cool phone wallpapers that you can get in free: