Here is the place where you can download and use beautiful images as wallpaper to personalized your iPhone. High resolution and retina display optimized.
How to change iPhone wallpaper
On your web browser (i.e. Safari), touch and hold your finger on the image until a menu for 'Save Image' and 'Copy' appear. Tap Save Image. The image will be saved in your 'Saved Photo'. Set it as wallpaper by following the instructions below. From your iPhone Home screen, go to the 'Settings' menu. Touch the 'Brightness & Wallpaper' menu, and you will bring up a 'Wallpaper' box showing the 'Home Screen' and 'Lock Screen' menu. Tap the image you like, and you will bring up a preview of the photo and three options: 'Set Lock Screen' is the image that will show up when the system locks after a certain amount of inactivity. 'Set Home Screen' is the main wallpaper. 'Set Both' uses the image as both your Lock Screen and Home Screen wallpaper. Done!