When you click facebook fanpage link, it goes to a web version, but it's not easy to use for mobile users. Mobile users like to use facebook App. Then we created a tool for redirection based on user's device.
For example, input CNN's fanpage URL, tool will get an unique facebook ID which is 5550296508. Then generate a smart facebook URL
This link will make a redirection by following rules:
tl;dr mobile will open the fanpage on facebook app instead of webpage.
Here is the example: https://www.piliapp.com/facebook/smart-url/?url=https%3A%2F%2Fwww.facebook.com%2Fcnn%2F
Just try it, have fun!