Type of Mobile Phone

A mobile phone (also known as a cellular phone, cell phone, and a hand phone) is a device that can make and receive telephone calls over a radio link while moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.

A bar (also slab, block, or slate) phone takes the shape of a cuboid, usually with rounded corners and/or edges. The name is derived from the rough resemblance to a candy bar in size and shape. This form factor is widely used by a variety of manufacturers, such as Nokia and Sony Ericsson. Bar type mobile phones normally have the screen and keypad all on one face. The Samsung SPH-M620 has a unique bar style, offering different devices on either side of the bar: a phone on one side, and a digital audio player on the other. Sony had a well-known 'Mars Bar' phone model CM-H333.

A touchscreen (or slate) phone is subsets of the bar form that, like a tablet computer, has few physical buttons, instead relying upon a touchscreen and an onscreen QWERTY keyboard. The first commercially available touchscreen phone was the IBM Simon Personal Communicator, released in 1994. Now quite common, well-known touchscreen smartphone manufacturers are Apple, HTC, LG Electronics, Motorola, Nokia, Samsung Mobile, and Sony.

A flip (or clamshell) phone consists of two or more sections that are connected by hinges, allowing the phone to flip open then fold closed in order to become more compact. When flipped open, the phone's speaker and microphone are placed closer to the operator's ear and mouth, improving usability. When flipped shut, the phone becomes much smaller and more portable than when it is opened for use.

A slider or slide phone is composed of usually two, but sometimes more, sections that slide past each other on rails. Most slider phones have a display segment which houses the speaker used for calls and for the phone's screen, while another segment contains the keypad or keyboard and slides out for use. The goal of a sliding form factor is to allow the operator to take advantage of full physical keyboards or keypads, without sacrificing portability, by retracting them into the phone when they are not in use. Many different companies have developed phones that slide. Samsung has the Corby and BlackBerry has the Torch.

Samsung Galaxy S4

Samsung Electronics Co., Ltd. is a South Korean multinational electronics company headquartered in Suwon, South Korea. It is the flagship subsidiary of the Samsung Group and has been the world's largest information technology company by revenues since 2009. Samsung Electronics has assembly plants and sales networks in 88 countries and employs around 370,000 people. For 2012 the CEO is Kwon Oh-Hyun.

Samsung has long been a major manufacturer of electronic components such as lithium-ion batteries, semiconductors, chips, flash memory and hard drive devices for clients such as Apple, Sony, HTC and Nokia.

In recent years, the company has diversified into consumer electronics. It is currently one of the world's largest manufacturers of mobile phones and smartphones fueled by the popularity of its Samsung Galaxy line of devices. The company is also a major vendor of tablet computers, particularly its Android-powered Samsung Galaxy Tab collection, and is generally regarded as pioneering the tablet market through the Samsung Galaxy Note family of devices.

Samsung has been the world's largest maker of LCD panels since 2002, the world's largest television manufacturer since 2006, and world's largest manufacturer of mobile phones since 2011.Samsung Electronics displaced Apple Inc. as the world's largest technology company in 2011 and is a major part of the South Korean economy.

Samsung Galaxy S4 is an Android smartphone produced by Samsung Electronics. First unveiled on March 13, 2013 at Samsung Mobile Unpacked in New York City, it is a successor to the Galaxy S III which maintains a similar design, but with upgraded hardware and an increased focus on software features that take advantage of its hardware capabilities—such as the ability to detect when a finger is hovered over the screen, and expanded eye tracking functionality (which includes scrolling). A hardware variant of the S4 also became the first ever smartphone to support the emerging LTE Advanced mobile network standard.

The S4 was made available in late April 2013 on 327 carries in 155 countries. Upon its release, it became the fastest selling smartphone in Samsung's history; the company sold 20 million S4 units worldwide in the two months following the device's launch.  Samsung has since sold more than 40 million units.

In addition to the touchscreen, the S4 has several physical user inputs including a home button located near the bottom of the screen, at the bottom of the S4 is the primary microphone and the micro’s port for both data connections and charging; it also supports USB host and MHL 2.0. There are volume keys on the left side and a power/lock key on the right. At the top there is a 0.14-inch (3.6 mm) headphone jack, the secondary microphone, and infrared blaster. The backside of the S4 has the 13-megapixel camera and LED flash, and at the bottom left edge has the loudspeaker.

Iphone 5

The iPhone is a line of smartphones designed and marketed by Apple Inc. It runs Apple's iOS mobile operating system. The first generation iPhone was released on June 29, 2007, the most recent iPhones, the seventh-generation iPhone 5C and iPhone 5S, were introduced on September 10, 2013.

The user interface is built around the device's multi-touch screen, including a virtual keyboard. The iPhone has Wi-Fi and cellular connectivity (2G, 3G, 4G, and LTE). An iPhone can shoot video (though this was not a standard feature until the iPhone 3GS), take photos, play music, send and receive email, browse the web, send texts, and receive visual voicemail. Other functions — video games, reference works, GPS navigation, social networking, etc. — can be enabled by downloading application programs (‘apps’); as of October 2013, the App Store offered more than one million apps by Apple and third parties.

There are seven generations of iPhone models, each accompanied by one of the six major releases of iOS. The original 1st-generation iPhone was a GSM phone and established design precedents, such as a button placement that has persisted through all models and a screen size maintained for the next four iterations. The iPhone 3G added 3G cellular network capabilities and A-GPS location. The iPhone 3GS added a faster processor and a higher-resolution camera that could record video at 480p. The iPhone 4 featured a higher-resolution 960×640 "Retina Display", a VGA front-facing camera for video calling and other apps, and a 5-megapixel rear-facing camera with 720p video capture. The iPhone 4S upgrades to an 8-megapixel camera with 1080p video recording, a dual-core A5 processor, and a natural language voice control system called Siri. IPhone 5 features the dual-core A6 processor, increases the size of the Retina display to 4 inches, and replaces the 30-pin connector with an all-digital Lightning connector. The iPhone 5S features the dual-core 64-bit A7 processor, an updated camera with a larger aperture and dual-LED flash, and the Touch ID fingerprint scanner, integrated into the home button. IPhone 5C features the same A6 chip as the iPhone 5, along with a new backside-illuminated Face Time camera and a new casing made of polycarbonate. As of 2013, the iPhone 3GS had the longest production run, 1181 days; followed by the iPhone 4, produced for 1174 days.