iOS 12 is the twelfth release of the iOS from Apple Inc., following on from iOS 11. It was announced at the Apple's Worldwide Developers Conference in June, 2018. It is aesthetically liike iOS 11 but has a number of performance and battery life improvements, security updates, and additional functions within apps. It was publicly released on September 17, 2018. iOS 12 focuses on performance and quality improvements.
For more information, read uk.pcmag.com/mobile-operating-system-2/116285/apple-ios-12
It was succeeded by iOS 13 on September 19, 2019. It features include a Dark Mode, a Find My App, a revamped Photos app, new Siri voice, updated privacy features, new street-level view for Maps, and more.
More information can be found at www.macrumors.com/roundup/ios-13/