Method 1: The Official "Purchased" Workaround (No Jailbreak)
AltStore is an alternative app store that lets you sideload IPA files using your Apple ID [16†L3-L6]. You simply open AltStore on your iOS 9.3.5 device, navigate to the "My Apps" tab, tap the plus sign, and select your Facebook IPA file [14†L7-L8]. facebook ipa for ios 935 verified
Older devices like the iPhone 4S will run slow. Method 1: The Official "Purchased" Workaround (No Jailbreak)
Ensure you have the official web version of installed (if you are using Windows). Do not use the Microsoft Store version of iTunes, as it lacks necessary connection drivers. Launch Sideloadly on your computer. Step 3: Sideload the Facebook IPA to Your Device navigate to the "My Apps" tab