iPhone 5 comes with iOs 7 which for sure looks better that the erstwhile OS.
But what if one already has an Android phone? Now changing an Android phone just for the sake of look and feel isn't an IN thing!
But we have a way out! There are many options for the Android to make their it like iPhone 5.
There are many themes available on Google Play which can be installed through various launcher making the phone resemble an iPhone.
Here are Some links that can help you to get the desired theme:
Option 1 - Visit : http://androidcritics.com/how-to-get-ios-7-on-all-android-devices/ and follow following steps:

2. Download iOS 7 3D Live Wallpapers
3. Configure the Control Center with the right settings
4. Apply the iOS 7 3D Live Wallpaper
5. You now have iOS 7 on your android device
Option 2 - Get Real iOS 7 theme from https://play.google.com/store/apps/details?id=com.bitfitlab.ios7.launcher
This is a simpler option since in one go, you get the theme.
How to apply the theme (once the theme is installed)
When you press home key you will have the dialog to complete action
using several options to use, our custom home launcher or your native
launcher, choose iPhone 5 launcher and select use as default for this
action. Now it will work without showing the pop up.
If you wish to
change back to you native home launcher. Go to installed apps, select
Real iOS 7 Launcher and click set it to default
If you don't want to change the entire theme than you can go
only for the locker. Locker allows only the lock patter to look like
iPhone 5. Locker can be downloaded from https://play.google.com/store/apps/details?id=com.appershopper.ios7lockscreen