Running YouTube on iOS 9.3.5 requires version 13.42.6, which can be installed by downloading the last compatible version from the App Store's purchase history. To resolve "Update Required" errors, users often must jailbreak their device to modify the Info.plist file or install the TubeRepair tweak. For more details, visit Reddit/r/LegacyJailbreak.
Search for YouTube: Type "YouTube" in the search bar within the Purchased section.
This is the biggest downside. You cannot just download an .ipa and tap "install." You need a computer (Windows or Mac) and software like Cydia Impactor, AltStore, or Sideloadly to sign the app with your Apple ID. Youtube.ipa For Ios 9.3.5
Installation and Compatibility
You're looking for a way to install YouTube on an iOS 9.3.5 device. Since YouTube was removed from the App Store for older iOS versions, you'll need to use a third-party method. Please note that sideloading apps can be risky, and I'm providing general guidance. Make sure you understand the potential risks and only proceed if you're comfortable with them. Running YouTube on iOS 9
Because the webview controller in iOS 9 is so old, Google’s "Sign in with Google" page often fails to load, leaving you stuck on a white screen. This prevents you from seeing your subscriptions.
No, if you expect a modern experience. You will not get YouTube Music integration. You will not get live chat on streams. You will not get 1080p 60fps smoothly. The app will feel slow (the 4s only has 512MB of RAM). IPA files are installation packages for iOS apps,
The Bottom Line: Google and Apple have abandoned iOS 9. But the archivists have not. The Youtube.ipa for iOS 9.3.5 is the final patch for a forgotten generation of hardware. Enjoy your vintage device while it lasts—but have a backup iPad ready for when YouTube inevitably changes its API next month.