Introduction the iPhone Evolution History

This is the first generation iPhone 2G, the iPhone really revolutionized the world of cell phones, especially in the use of 3.5 inch capacitive touchscreen.

This smartphone doesn't have GPS and 3G, but it has Wi-Fi and Bluetooth. The iPhone has a weak 2-megapixel camera without flash.

This iPhone version only allows update to the iOS 3 without the possibility of upgrading to newer versions like iOS 6.

Its internal memory is a good differential, has 8GB of storage.

This is iPhone 3G, the Apple® introduced the new iPhone™ 3G, combining all the revolutionary features of iPhone with 3G networking that is twice as fast* as the first generation iPhone, built-in GPS for expanded location based mobile services, and iPhone 2.0 software which includes support for Microsoft Exchange ActiveSync and runs the hundreds of third party applications already built with the recently released iPhone SDK. In the US the new iPhone 3G is priced at a stunning $199 for the 8GB model, and just $299 for the 16GB model.** iPhone 3G will be available in more than 70 countries later this year, beginning with customer availability in 22 countries—Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Italy, Japan, Mexico, Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, UK and the US.

This is iPhone 3Gs,The iPhone 3GS (originally stylized as iPhone 3G S ^[8]) is a smartphone that was designed and marketed by Apple Inc. It is the thirdgeneration iPhone, successor to the iPhone 3G. It was introduced on June 8, 2009, at the WWDC 2009 which took place at theMoscone Center, San Francisco.

This iPhone is named "3GS" where "S" stood for Speed (Phil Schiller had mentioned it in the launch keynote^[9]). Improvements includeperformance, a 3-megapixel camera with higher resolution and video ability, voice control,^[10] and support for 7.2 Mbit/s HSDPAdownloading (but remains limited to 384 kbps uploading as Apple had not implemented the HSUPA protocol).^[11] It was released in the U.S., Canada and six European countries on June 19, 2009,^[4] in Australia and Japan on June 26, and internationally in July and August 2009.

The iPhone 3GS runs Apple's iOS operating system. It is controlled mostly by a user's fingertips on a multi-touch display. It was succeeded as Apple's flagship smartphone in 2010 by the iPhone 4; however, the 3GS continued in production until September 2012 when the iPhone 5 was announced.

This is  iPhone 4, the iPhone 4 Features, though he would focus on only a handful for the keynote. The iPhone 4 looks like the iPhone prototype obtained under questionable circumstances by Gizmodo: stainless steel casing, all-glass front, and a design Jobs describes as the thinnest smartphone on the planet: almost 25 percent thinner than the iPhone 3GS.. Unlike previous iPhones, the iPhone 4 will have volume controls on the side of the phone along with an accessible microSIM tray. The iPhone 4 features a front-facing camera, and the back sports a microphone, 30pin connector for docking, and a speaker, while the top sports a second microphone for noise cancellation, sleep/wake button, and a headset input.

This is iPhone 4S. About the iPhone 4S CPU and graphics: The iPhone 4S now has the iPad 2's dual-core A5 CPU. It also has dual-core graphics, which will allow for faster and more detailed 3D. Apple claims this hardware combination makes the iPhone 4S seven times as fast as the iPhone 4 on games, and two times as fast on normal tasks.

this is iPhone 5, The iPhone 5 will be longer, thinner, and lighter than the 4S, but no wider. Apple's Phil Schiller said the company rejected the direction chosen by many Android phones: "For the first time ever, we've increased the size of the display. By making the screen taller, but not wider, you can still comfortably use it with one hand."

this is iPhone 5c, The iPhone 5c is essentially a repackaged iPhone 5 with a new plastic enclosure. The new device is available in five different colors -- green, yellow, blue, white, and pink.

The phone uses the same A6 processor and rear-facing camera as the iPhone 5, but does contain a few upgraded parts -- such as an improved front-facing FaceTime camera and support for more wireless LTE bands.

The new iPhone 5c starts at $99 (with 2 year contract) in the U.S. and is now available for order from Apple, AT&T, Verizon, Sprint and T-Mobile. Retail stores, such as Wal-Mart, Best Buy, Radio Shack and Target are also offering the iPhone 5c, and many have been discounting the price of the 16 GB model to $50 or less with a two-year contract.

On Friday, October 25, Apple launched the iPhone 5c in 35 additional countries, including Russia, Spain, and Mexico, and a third wave launch took place on November 1. The iPhone 5c is now available in more than 60 countries, online, via Apple resellers, or through brick and mortar Apple Stores.

This is iPhone 5s,  Apple Stores were busy the world over with lines forming in the wee hours of the morning. The gold and white 5s sold out at many locations, leaving a lot of customers with slate as the only option. Despite the limited supply of some models at launch, it was a good day for Apple and InformationWeek managed to score an iPhone 5s. 

After spending some time with the iPhone 5s, there are a number of features that stand out. Here's what we like best.

This is iPhone 6 and iPhone 6 Plus，This is iPhone 6 and iPhone 6 Plus!

The iPhone 6 and iPhone 6 Plus are smartphones designed and marketed by Apple Inc. The devices are part of the iPhone seriesand were unveiled on September 9, 2014, and released on September 19, 2014.^[16] The iPhone 6 and iPhone 6 Plus jointly serve as successors to the iPhone 5C and iPhone 5S.

The iPhone 6 and iPhone 6 Plus include a number of changes over their predecessor, including models with larger 4.7 and 5.5 inches (120 and 140 mm) displays, a faster processor, upgraded cameras, improved LTE and Wi-Fi connectivity, and support for anear field communications-based mobile payments offering.

This is iPhone 6s, Just as we expected, Apple announced the next versions of its best-selling smartphones, the iPhone 6S and 6S Plus, at its annual launch event in San Francisco. Also as we expected, the iPhone 6S looks identical to last year's 4.7-inch iPhone 6, reserving its most important alterations for the hardware interior.

The biggest, and most noticeable change to this year's set of phones is "3D Touch," a pressure-sensitive display technology that lets you push in to do new things on your phone. After getting a chance to check out the new iPhone 6S and 6S Plus briefly at Apple's San Francisco event, these were our impressions.

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