Imagine crafting the perfect wallpaper with snappy colors and a balanced composition. Now, imagine setting it, and it looks smeary. That crisp image you picked now looks like it's wearing a midday fog ...

Once in Settings, click Accessibility. Tap Display & Text Size and enable Reduce Transparency to remove blur effects for better legibility. If that doesn't work, you'll have to reset the Home Screen.

As sharp as the display on more recent models of the iPhone may be, it may still run into problems. For example, you might unlock your phone or exit an app to find that your Home Screen wallpaper is ...