Since the iPhone's launch further features have been added, including larger screen sizes, shooting video, waterproofing, the ability to install third-party mobile apps through an app store, and many accessibility features. It connects to cellular networks or Wi-Fi, and can make calls, browse the web, take pictures, play music and send and receive emails and text messages. The iPhone has a user interface built around a multi-touch screen. As of November 1, 2018, more than 2.2 billion iPhones had been sold. Since then, Apple has annually released new iPhone models and iOS updates. The first-generation iPhone was announced by then-Apple CEO Steve Jobs on January 9, 2007. that use Apple's iOS mobile operating system. The iPhone is a line of smartphones designed and marketed by Apple Inc. 3.5 in (89 mm) 3:2 aspect ratio, aluminosilicate glass covered 16,777,216-color (24-bit) IPS LCD screen, 960 × 640 px at 326 ppi, 800:1 contrast ratio, 500 cd⁄ m² max brightness.In addition to prior, features a fingerprint-resistant oleophobic coating, and 262,144-color (18-bit) TN LCD with hardware spatial dithering.3:2 aspect ratio, scratch-resistant glossy glass covered screen, 262,144-color ( 18-bit) TN LCD, 480 × 320 px ( HVGA) at 163 ppi, 200:1 contrast ratio.

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