Running the official YouTube app on an iPhone 4 with iOS 7.1.2 is no longer officially supported, as the app now requires iOS 16 or later to function . However, you can still access YouTube using several workarounds. Method 1: Safari Web Browser (Recommended)
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Host: "Once you've downloaded the older YouTube version, follow these steps: Running the official YouTube app on an iPhone 4 with iOS 7
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The mobile site is designed for compatibility across older devices and does not require a software update. ftp.bills.com.au 4. Advanced (Legacy Jailbreak)