Downloading a functional Instagram IPA for iOS 9.3.5 (commonly for the iPad 2 or iPhone 4S) is difficult because Instagram's servers no longer support the API calls used by such old versions. Even if you install the app, it will likely fail to log in or refresh the feed.
To download Instagram IPA for iOS 9.3.5, you'll need to use a third-party source, such as: Instagram Ipa Ios 9.3 5 Download
Once you have downloaded the Instagram IPA to your computer, you cannot simply drag and drop it onto your iPhone or iPad. You need a sideloading tool. Method A: Sideloadly (Recommended) Downloading a functional Instagram IPA for iOS 9
If you still wish to attempt an installation, there are three primary methods: Open App Store → Updates → Purchased (or
This community focuses specifically on keeping "whitelisted" legacy devices alive. Their forums and App Store alternatives often host verified versions of Instagram that still communicate with modern servers. How to Install the IPA on Your Device
Possible Workarounds: If you're looking to use Instagram on an older device, you might consider:
Download the IPA: Trusted sites like iOS Ninja or Loadly.io often host legacy IPAs for older iOS versions.