Why does my iphone 5 replacement phone seem to have older graphics?

For example, when I turn on your iphone 5, it had a sliced apple that's silver. When I turned on my replacement iphone 5 the apple is black. Also, the battery symbol there's much bigger and elongated while the original iphone 5 battery icon is small

It sounds like its just ios7, i have a white iPhone 5s when i turn it on its just a black apple with white screen, and i guess the battery is big, i don't know how small you mean, if you don't like it take it back to a local apple store

The iPhone 5 originally ran iOS 6; iOS 7 came some time after. If you are using an iPhone 5 with iOS 6, the visuals will look dramatically different from the way they look with iOS 7. However, you can easily upgrade to iOS 7 for free if you prefer the iOS 7 visuals.