So, what do you do? You turn to the .

The reason you can't install Facebook from the App Store on iOS 9.3.5 is that the app has been updated to require a newer version of iOS. Facebook's developers have dropped support for older iOS versions, including 9.3.5, to ensure that their app remains compatible with the latest iOS features and security patches. As a result, when you try to install Facebook from the App Store on iOS 9.3.5, you'll encounter an error message stating that the app requires a newer version of iOS.

Fortunately, you can bring your legacy device back to life. By using a Facebook .IPA file (the iOS application archive format), you can sideload a compatible version of Facebook onto your older iPhone or iPad. This comprehensive guide walks you through everything you need to safely source, download, and install a working Facebook IPA for iOS 9.3.5. The Core Challenge: App Compatibility on iOS 9.3.5

When you attempt to download Facebook directly from the App Store on an iOS 9.3.5 device, you will generally face one of two hurdles: