Android mobile phones have a lot more configuration options than an iPhone, which is one of the reasons I love my new Samsung Galaxy S4.
Take the lock screen - the screen you see when you first press the home or power button on an Android mobile device. When you first buy the phone, you'll just see a blank screen with the time at the top, like this:
Just like with an iPhone, you swipe to the right to unlock the Galaxy S4, but the iPhone has a camera icon on it's lock screen that lets you jump right to the built-in camera on the iPhone without unlocking the phone.
The Galaxy tops that by letting you configure multiple shortcut apps, and letting you vertically swipe them to both unlock the phone and jump right to the application.
To add shortcuts to the lock screen on a Samsung Galaxy S4...