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While MS-DOS and NT always treat the suffix after the last period in a file's name as its extension, in UNIX-like systems, the final period does not necessarily mean that the text after the last period is the file's extension. [1] Some file formats, such as .txt or .text, may be listed multiple times.
The iPhone, developed by Apple Inc., is a line of smartphones that combine a mobile phone, digital camera, personal computer, and music player into one device. Introduced by then-CEO Steve Jobs on January 9, 2007, the iPhone revolutionized the mobile phone industry with its multi-touch interface and lack of physical keyboard.
It primarily receives EPUB content from the Apple Books store, but users can also add their own EPUB and Portable Document Format (PDF) files via data synchronization with iTunes. Additionally, the files can be downloaded to Apple Books through Safari or Apple Mail. It is also capable of displaying e-books that incorporate multimedia. [6]
The iPhone 14, 14 Plus, 14 Pro, and 14 Pro Max were announced on September 7, 2022. All models introduced satellite phone emergency calling functionality. A new 14 Plus model introduced the large 6.7-inch screen size, first seen on the iPhone 12 Pro Max, into a lower-cost device. [ 52 ]
Like the iPhone 14 and 14 Plus, the iPhone 14 Pro and Pro Max were shipped with iOS 16. They also support iOS 17 and iOS 18 which was released to the public in September, 2024. The next-generation Qi2 wireless charging standard has been added to the iPhone 14 series of devices with the update to iOS 17.2. [30] [31]
iPhones are named with "iPhone" followed by a number, which denotes the iPhone generation, and sometimes a suffix (such as Plus, Pro, Pro Max). The current naming pattern is that "Plus" indicates a physically larger iPhone model of the same generation, sometimes with higher end features (iPhones 6 Plus through iPhone 16 Plus).
The original iPhone OS (1.0) up to iPhone OS 3.1.3 used Darwin 9.0.0d1. iOS 4 was based on Darwin 10. iOS 5 was based on Darwin 11. iOS 6 was based on Darwin 13. iOS 7 and iOS 8 are based on Darwin 14. iOS 9 is based on Darwin 15. iOS 10 is based on Darwin 16. iOS 11 is based on Darwin 17. iOS 12 is based on Darwin 18. iOS 13 is based on Darwin ...
iOS 14 is the fourteenth major release of the iOS mobile operating system developed by Apple for the iPhone and iPod touch lines. Announced at the company's Worldwide Developers Conference on June 22, 2020 as the successor to iOS 13 , it was released to the public on September 16, 2020.