Some enthusiasts still attempt to "sideload" older versions of apps using or .xap files. Facebook and Windows Phone 8.1 now (almost) a no-go
Facebook officially ended support for its family of apps—including Instagram and Messenger—on Windows Phone 8.1 in . Even if you manage to find the app in the store, it will likely fail to log in or load content due to outdated security protocols. 2. Best Alternative: Use the Mobile Browser
The Lumia 720 has a dual-core Snapdragon S4 Plus CPU and 512MB of RAM (or 1GB on some variants). To keep Facebook smooth: download facebook app for nokia lumia 720
: Open the browser and type m.facebook.com into the address bar.
Alternatively, side-load Slim Social if you want a wrapper. Avoid the broken legacy app. Some enthusiasts still attempt to "sideload" older versions
However, as social media evolved, the need for a dedicated, feature-rich application became necessary for features like Messenger, Groups, and Marketplace.
– Open Internet Explorer or Microsoft Edge on the Lumia 720 and go to m.facebook.com . You can pin this website to your start screen (Menu → Pin to Start) to use it like an app. Alternatively, side-load Slim Social if you want a wrapper
Stay retro, stay connected.
To make it feel like a downloaded app, you can pin the website to your Start screen.