: Because older app versions may lack security updates or crash frequently, the most reliable way to use Facebook on iOS 12 is through the Facebook mobile site in Safari. You can add this to your home screen by tapping the Share icon and selecting Add to Home Screen . Safety Warning on IPA Files
If your goal is a faster, lighter, or ad-reduced Facebook experience on an older iOS device, try these official methods: facebook ipa for ios 1255
Facebook not working on my iOS 12.5.5 - Apple Support Community : Because older app versions may lack security
If you've never owned the app, sign in with your Apple ID on a friend's newer iPhone (iOS 14+), download Facebook there, then come back to your old phone. It will now show up in your "Purchased" history. The Web Alternative: If the app just won't cooperate, use Safari! Go to facebook.com and log in. You can even tap the button and select "Add to Home Screen" to make it feel just like a real app. Why is this happening? It will now show up in your "Purchased" history