Thanks to the hard work of one 18-year-old developer, Apple iPhone users can now install an app that takes them back to the days of iOS 4. The app is aptly named 'OldOS,' and **'s one of the most creative iPhone app releases in recent memory. As ** stands today, iOS 14 is a pretty fantastic operating system, more detailed <a href=https://screenrant.com/oldos-iphone-app-ios-4-features-download/>https://screenrant.com/oldos-iphone-app-ios-4-features-download/</a>