Scrolling is achieved by swiping a finger across the screen.
It debuted with i OS 5, the fifth major version of i OS, Apple's mobile operating system, that introduced features including i Cloud, i Message, Notification Center, Reminders, and Twitter integration.
Reception to the It was succeeded by the i Phone 5 as Apple's flagship phone on September 12, 2012.
The i Phone 4S remained on sale, albeit being sold with reduced storage (from 16/32/64 GB down to 8 GB).
The 4S was discontinued officially on September 9, 2014 following the announcement of the i Phone 6, although production did continue for developing markets until February 17, 2016.
The service allows users to browse and download applications from the i Tunes Store that were developed with Xcode and the i OS SDK and were published through Apple.