A huge number of people who visit Facebook are on a smartphone or tablet, using the official Facebook app. Because of the quantity of people using the mobile versions, it would be crazy of Facebook not to enable the “Like” button on mobile applications. That’s why they’re changing things up and enabling Android and iOS developers to put a Like button in their apps.
You can embed the Like button to do a few different actions. You can either have it Like an Open Graph object within the app, simply Like the Facebook page, or share a certain type of achievement or reward in a game. Here’s what the Like button will look like in a mobile application:
Facebook isn’t going to stop growing anytime soon, and this is just another way they’re expanding even more.