Download the app Open the app store on your mobile device. Search for 'YouTube'. Select the official YouTube app. Google Help
Use the App Store trick (Method 1) to download the broken old version of YouTube.
Change their values from the old version number to a modern version number (e.g., 17.05.2 ). Save the file and reboot your device. youtube for iphone 4 ios 712 download upd
I can provide specific troubleshooting steps based on your setup. Share public link
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Are you getting a when opening the App Store?
To ensure videos do not stutter or buffer endlessly on your vintage hardware, apply these performance tweaks: Download the app Open the app store on your mobile device
If your iPhone 4 is running on iOS 12, you're in a slightly better position. Although iOS 12 is still an older operating system, it's more compatible with newer apps than iOS 7.