Traditionally, the ruler of the iPhone with the letter “S” is an update of the previous generation of Apple smartphones. So it was with iPhone 3GS, iPhone 4s, iPhone 5s and and the latest iPhone 6s and 6s Plus. If you look at the list of changes in the last two models, we can see that the flagships of 2015 are the biggest “S-update” in the history of mobile devices, a California Corporation.
iPhone 3GS
Improved model of the iPhone 3GS was introduced on 8 June 2009. The device had twice the amount of RAM (256 MB), a more powerful processor (ARM Cortex-A8 600 MHz), a camera with a resolution of 3.2 megapixels with autofocus (the previous models had 2 megapixels), available in the configuration with 32 GB of internal memory. The new version of the operating system removed a significant proportion of software flaws. Also access additional features such as MMS, Spotlight, the ability to download videos and audio books, and many others. The smartphone became available for purchase on June 18, 2009, and for the first three days of sales amounted to more than 1 million vehicles.
iPhone 4s
the iPhone 4s was introduced on October 4, 2011. The presentation for the first time instead of Steve jobs spent new Apple CEO Tim cook. The next day Steve jobs died. The phone looks no different from the previous model iPhone 4, but the technical characteristics are greatly improved. iPhone 4s can work simultaneously in two communication standards GSM and CDMA. The maximum download speed of iPhone 4s is 14.4 Mbps versus 7.2 Mbps on the iPhone 4. The new smartphone has an 8-megapixel camera with support for recording videos in full HD (the iPhone 4 is 5 megapixels). The iPhone 4s dual-core Apple A5 processor and new operating system iOS 5, which allows messaging iMessage between IOS devices. Finally, the novelty is equipped with an intelligent assistant Siri — a system that recognizes speech, turning it into a text message and answer questions. In the USA, Australia, Canada, France, Germany, Japan and the UK, where sales of the device began on 14 October, for the first three days it sold more than 4 million smartphones, which was a record for Apple.
iPhone 5s
September 11, 2013 in Cupertino presented two devices. Along with the flagship iPhone 5s, the company showed the iPhone 5c. The last case is made of polycarbonate and available in five bright colors — white, yellow, blue, pink and light green. Technical specifications have not changed. RAM also was 1 GB, internal memory — 16 or 32 GB. Unit weight was 130 grams. The main innovation of the iPhone 5s is a 64-bit Apple A7 processor, the battery capacity of 1560 mAh battery (compared to the iPhone 5 1440). The weight of the device was the same 112 grams, which is the previous model. The look of the case became more accessible in three colors — black, white and gold. Supported operating system iOS 7. The opportunity arose to record SloMo with a frequency of 120 frames per second. In addition, a system was introduced fingerprint recognition Touch ID to unlock the screen and authorize iTunes and App Store.
iPhone 6s and 6s Plus
On September 9 of this year, Apple presented the iPhone 6s and iPhone 6s Plus. The housing of the devices now are made of durable aluminum alloy 7000 series, and gadgets use a new glass, which thanks to a unique two-step ion exchange is the most durable. iPhone 6s got the display with the technology of determining the pressing force 3D Touch, as well as a feedback mechanism called the taptic Engine, which provides tactile response.
New smartphones are equipped with a single-chip system Apple A9 processor with coprocessor M9. 64-bit A9 SoC has 70% faster CPU and 90% faster GPU than the A8 used in the iPhone 6. In devices enhanced support for LTE — 23 range, and is also used twice as faster Wi-Fi adapter. New fingerprint sensor Touch ID, faster authorization. In phones twice as much RAM to 2 GB and uses an improved camera with a resolution of 12 megapixels and support for 4K video recording.
An interesting feature of the iPhone 6s camera — pictures Live Photo. In this mode, the camera, in addition to full static image maximum resolution and quality, takes a few seconds of video with sound. Front-facing FaceTime HD camera now has a resolution of 5 megapixels.
