IPHONE 5
The iPhone a line of 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 5th generation
iPhone, the iPhone 4S, was announced on October 4, 2011,
and released 10 days later.
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 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[when?]
has over 500,000[2]
"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.
There
are five generations
of iPhone models, each accompanied by one of the five major releases of iOS (formerly iPhone OS). The original iPhone
was a GSM phone, and established design precedents,
such as screen size and button placement, that have persisted through all
models. The iPhone 3G added 3G
cellular network capabilities and A-GPS location.
The iPhone 3GS added a compass, faster processor,
and higher resolution camera, including video recording at 480p.
The iPhone 4 has a rear-facing camera (720p
video) and a front facing camera (at a lower resolution) for FaceTime video calling and for use in other
apps like Skype. The iPhone 4 featured a
higher-resolution 960 × 640 display; it 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. 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,
and video stabilization,
a faster, dual core processor, support for both GSM/UMTS and CDMA on one chip, GLONASS support and a natural
language voice control
system called Siri.[4] It is available in 16 GB and 32 GB,
as well as a new 64 GB capacity. In the United States, it was announced that
two new carriers, Sprint and C Spire, would begin carrying the iPhone 4 and iPhone 4S in October and November 2011,
respectively.[5]
Camera
The original iPhone and iPhone 3G feature a built-in fixed focus 2.0 megapixel camera located on the back for still
digital photos. It has no optical zoom, flash or autofocus, and does not support video
recording (iPhone 3G does support video recording via third-party App available
on the App Store), however jailbreaking allows users to do so. Version 2.0
of iPhone OS introduced the capability to embed location data in the pictures, producing
geocoded photographs.
The iPhone 3GS has a 3.2 megapixel camera, manufactured by OmniVision,
featuring autofocus, auto white balance, and auto macro (up to 10 cm). It
is also capable of capturing 640 × 480 (VGA
resolution) video at 30 frames per second, although compared to higher-end CCD based
video cameras it does exhibit the rolling shutter effect.[81] The video can then be cropped on the device itself and directly
uploaded to YouTube, MobileMe, or other
services.
The iPhone 4 introduced a 5.0 megapixel camera (2592 × 1936 pixels), also
located on the back, which is equipped with a backside illuminated
sensor capable of capturing pictures in low-light conditions, as well as an LED flash
capable of staying lit for video recording at 720p
resolution, considered high-definition.[82] iPhone 4 is the first iPhone that has the high dynamic
range photography feature.[83] In addition the iPhone 4 has a
second camera on the front capable of VGA photos
and SD
video recording.
Regardless of the source, saved recordings may be synced to the
host computer, attached to email, or (where supported) sent by MMS.
Videos may be uploaded to YouTube directly.
The camera on the iPhone 4S is capable of shooting 8MP stills
and recording 1080p videos. The camera can now be accessed directly from the lock screen, and the
volume up button as a shutter trigger. The built-in gyroscope is able to
stabilize the camera while recording video.
Beta code pulled from iOS 5 suggests that the next feature to be
released will allow users to capture a panoramic photo on their iPhone
On all five model generations, the phone can be configured to
bring up the camera app by quickly pressing the home key twice.[85] On all iPhones running iOS 5 it can
also be accessed from the lock screen directly.
Storage and SIM
An iPhone 3G with the SIM slot open. The SIM ejector tool is
still placed in the eject hole.
The iPhone was initially released with two options for internal
storage size: 4 GB or 8 GB. On September 5, 2007, Apple discontinued
the 4 GB models. On February 5, 2008, Apple added a 16 GB model.[87] The iPhone 3G was available in 16 GB and
8 GB. The iPhone 3GS came in 16 GB and 32 GB variants and still
is available in 8 GB.
The iPhone 4 is available in 16 GB and 32 GB variants,
as well as a newly introduced 8 GB variant to be sold along side the iPhone 4S
at a reduced price point. The iPhone 4S is available in three sizes: 16 GB,
32 GB and 64 GB. All data is stored on the internal flash drive; the
iPhone does not support expanded storage through a memory card slot, or the SIM
card.
GSM models of the iPhone use a SIM card
to identify themselves to the GSM network. The SIM sits in a tray, which is
inserted into a slot at the top of the device. The SIM tray can be ejected with
a paperclip or the "SIM ejector tool"
(a simple piece of die-cut sheet metal) included with the iPhone 3G and 3GS.[88][89] Some iPhone models shipped with a SIM ejector
tool which was fabricated from an alloy dubbed "Liquidmetal".[90] In most countries, the iPhone is usually sold
with a SIM lock, which prevents the iPhone from being
used on a different mobile network.[91]
The GSM iPhone 4 features a MicroSIM card that is located in a slot on the
right side of the device.The CDMA model of the iPhone,
like all CDMA phones, does not use a SIM
Liquid contact indicators
The iPhone is equipped with liquid contact indicators which
change from white to red in color when they come in contact with water. These
suggest whether water damage has affected the device. The indicators on the
iPhone include a small disc which is located at the bottom of the headphone jack and with
the iPhone 3G and all later models an additional one is located at the bottom
of the dock connector.[93]
The indicators are often used by Apple employees to determine
whether the device qualifies for a warranty
repair or replacement. If the indicators show that the device was exposed to
water, they may determine that the device is not covered by Apple. However, the
liquid contact indicators may be triggered through routine use, and if a device
is worn while exercising, the sweat from an owner may dampen the indicators
enough to indicate water damage.
On many other mobile phones from different manufacturers, the
liquid contact indicators are located in a protected location, such as beneath
the battery behind a battery cover, but the indicators on an iPhone are
directly exposed to the environment. This has led to criticism of the placement
of the indicators, which may also be affected by steam in a bathroom or other
light environmental moisture.[95] In response to these criticisms, Apple made a
silent change to their water damage policy for iPhones and similar products.
This new policy allows the customer to request further internal inspection of
the phone to verify if internal liquid damage sensors were triggered.
Included items
All iPhone models include written documentation,
and a dock connector to
USB cable.
The original and 3G iPhones also came with a cleaning cloth. The original
iPhone included stereo headset (earbuds and a microphone) and a plastic dock
to hold the unit upright while charging and syncing. The iPhone 3G includes a
similar headset plus a SIM eject tool (the original model requires a
paperclip). The iPhone 3GS includes the SIM eject tool and a revised headset,
which adds volume buttons (not functional with previous iPhone versions).
The iPhone
3G and 3GS are compatible with the same dock, sold separately, but not the
original model's dock.[98] All versions include a USB power adapter, or
"wall charger," which allows the iPhone to charge from an AC outlet.
The iPhone 3G and iPhone 3GS sold in North America, Japan, Colombia, Ecuador,
or Peru[99][100] include an ultracompact USB power adapter.
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