Follow these steps to make sure your Facebook apps is reachable on all devices with smart-URLs.
Got to your app on your Facebook page and click on the button “Smart-URL” found in the top right corner.
Select and copy the URL from the input field.
Use the URL to paste on your timeline to link to your app.
Facebook is going to ask you to confirm the link. Just enter the security code and click “Submit” and your smart-URL is instantly posted to your timeline.
Now anyone clicking on your link from a mobile device will see your app.
Want to create a neater looking URL? Use a URL-shortener such as bitly.com to shorten your link.
The shortened link works the same way.
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