IPhone

''This is the article about the line of smartphones. For the first iPhone see: iPhone (original)''

 The iPhone is a line of high end smartphones, designed and marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007. The 9th generation iPhones, the iPhone 6s and iPhone 6s Plus, were announced on September 9th, 2015, and released on September 25, 2014, including iOS 9 , the Apple operating system for handheld devices.

An iPhone can function as a video camera (video recording was not a standard feature until the iPhone 3GS was released), a camera phone, a portable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and 3G connectivity(the origuinal iPhone only supported EDGE(2G),while the iPhone 4S supports non-LTE 4G and the iPhone 5, 5C, and 5S support LTE). The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one. Third-party as well as Apple application software is available from the App Store, which launched in mid-2008 and now has over 900,000 "apps" approved by Apple. These apps have diverse functions, including games, reference, GPS navigation, social networking, security and advertising for television shows, films, and celebrities.

Models
There are nine generations of iPhone models, each accompanied by one of the nine major releases of iOS (formerly known as iPhone OS).



iPhone
The original iPhone was a GSM phone that established design precedents like screen size and button placement that have persisted through all models.



iPhone 3G
The iPhone 3G added 3G cellular network capabilities and A-GPS(Assisted GPS)location.

iPhone 3GS
The iPhone 3GS added a compass, faster processor, and higher resolution camera, including video recording at 480p.



iPhone 4
The iPhone 4 featured a higher-resolution 960x640 "Retina" display, a rear facing camera (720p video) and introduced a front facing camera (at a lower VGA resolution) for FaceTime video calling and for use in other apps like Skype. The iPhone 4 was released on June 24, 2010. In the U.S., AT&T was the only authorized carrier until February 10, 2011, when a CDMA version of the iPhone 4 launched for Verizon.

iPhone 4s


On October 4, 2011, Apple announced the iPhone 4s. The iPhone 4s added a higher resolution camera (8 megapixel) with 1080p video recording, face detection, video stabilization, a faster, dual core A5 processor, multi-standard wireless support (allowing a single handset to operate on networks based on both GSM/UMTS and CDMA technologies), GLONASS support, Bluetooth 4.0 and a natural language voice control system called Siri. It was available in 16 GB, 32 GB, and 64 GB capacity options. In the United States, it was announced that two carriers, C Spire and Sprint, would begin carrying the iPhone 4 and iPhone 4s on October and November 2011, respectively.



iPhone 5
The iPhone 5 was introduced on September 12, 2012, and released on September 21. The iPhone 5 features a dual-core A6 processor with 1GB of RAM, a new 4-inch Retina Display, a new digital connector known as Lightning.

iPhone 5s & iPhone 5c


On September 10, 2013, Apple announced the iPhone 5c and iPhone 5s.

The iPhone 5c sports five colors, white, pink, yellow, blue, and green, and featured iOS 7, which introduced a new flatter design. This iPhone is the first to be made out of plastic since the iPhone 3GS.

The iPhone 5s introduces Touch ID, a fingerprint scanner to secure your iPhone. The camera has been improved by replacing the LED flash with True Tone Flash, a dual-tone flash that chooses between white and amber, to give you the perfect photo. These two iPhones were the first to include new color options.



iPhone 6 & iPhone 6 Plus
On September 9, 2014, Apple announced the iPhone 6 and iPhone 6 Plus. These models again increased the screen size to 4.7 and 5.5 inches, respectively. Other improvements included a new video camera, NFC, and 802.11ac WiFi.



iPhone 6s & iPhone 6s Plus
On September 9, 2015, Apple announced the iPhone 6s and iPhone 6s Plus. These models introduced 3D Touch, which displays different options depending on how much pressure is placed upon the screen. Other improvements included Live Photos, a 4K video camera and 12MP digital camera, "Retina Flash" which flashes the screen during a self portrait, and a new "Rose Gold" color option.

The iPhone 6s and 6s Plus include iOS 9, a new version of the mobile OS which features improved performance and the capabilities to handle 3D touch.

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