Safer alternatives exist. Users can access YouTube through a compatible web browser (e.g., a streamlined version via Safari) or consider older, officially archived versions of the YouTube app if they were previously purchased under their Apple ID. Another practical route is upgrading to a newer device, as iOS 9.3.5 lacks security updates and modern app support.
If you simply need "YouTube in the background" or "No ads," you are out of luck on stock iOS 9.3.5. The CPU cannot handle modern decryption. download youtube ipa file for ios 935 fix
This is the easiest way to get the app if you have previously "purchased" it with your Apple ID. on your iOS 9.3.5 device. Go to the Purchased tab at the bottom. Search for "YouTube" in your list of apps. Safer alternatives exist
When prompted with "Download an older version of this app?", tap Download . If you simply need "YouTube in the background"