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see cellular telephonecellular telephone
or cellular radio,
telecommunications system in which a portable or mobile radio transmitter and receiver, or "cellphone," is linked via microwave radio frequencies to base transmitter and receiver stations that connect the user to a conventional
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A combination cellphone and handheld computer that created the greatest tech revolution since the Internet. A smartphone can do everything a personal computer can do, and because of its mobility, much more. Although screen size is a limitation, the increasingly higher resolutions make viewing pleasurable (see phablet), and voice recognition can eliminate some of the typing.

A smartphone combines a cellphone with email and Web, music and movie player, camera, camcorder, GPS navigation, voice recorder, alarm clock, flashlight, photo album, address book and a lot more. It is also a personal assistant that delivers information and answers questions about almost everything (see virtual assistant). A lot more personal than a personal computer, a smartphone is generally within reach at all times.

Apps, Apps and More Apps
Like any computer, what gives life to the hardware is the software, and there are hundreds of thousands of mobile applications, both free and paid (see online app store). However, there are often dozens of apps offering nearly identical functions. All apps are created for both iPhones and Androids and sometimes for Windows phones. New BlackBerry apps are rare. See how to select a mobile device, smartphone features, smartphone operating system and cellphones vs. smartphones.

A Dumb Phone and Smart Everything Else
Ironically, the least spectacular thing about a smartphone is the phone. A smartphone can cut out and drop calls like any cellphone, and the more users within a cell tower's reach at a given moment, the more interruptions are likely.

In 1994, IBM and BellSouth introduced the heavy and pricey Simon Personal Communicator, a phone/PDA touted as the first smartphone (see personal communicator). Amassing a large audience in the 2000s, BlackBerry became the popular corporate smartphone; however, in 2007, the iPhone changed the industry forever. See iPhone, Android, BlackBerry, Windows Phone, Symbian, feature phone and smartphone keyboard. See also smart TV.

Smartphone Platforms
These models were some of the first smartphones on the market. Both iPhones and Windows have consistent user interfaces; however, Android manufacturers often add their own interface features. In its heyday, the BlackBerry's physical keyboard was its trademark.

A Double Touchscreen Smartphone
With an LCD in front and E Ink screen in back, YotaPhone batteries last up to five days in E Ink mode, and it is the only smartphone visible in bright sunlight. See E Ink.

A Modular Smartphone
In 2016, Motorola introduced its Moto Z family of modular phones. Snap-ons add high-fidelity speakers, a pico projector or, as in this example, a professional Hasselblad camera. See Moto Z. (Image courtesy of Motorola Mobility LLC,

One of the First
In 2002, this Palm Treo ran the popular Palm PDA application along with email and Web browsing. See Palm. (Image courtesy of Palm, Inc.)
References in periodicals archive ?
This would let corporate developers quickly respond to problems, and ensure they can treat Smartphone 2003 devices as part of their standard build-and-deploy process.
SEVEN's software supports all major device platforms, including BREW, J2ME, Microsoft Pocket PC, Microsoft Smartphone 2003, Microsoft Windows Mobile 5.
Our software supports all major device platforms, including BREW, J2ME, Microsoft Pocket PC, Microsoft Smartphone 2003, Palm OS and Symbian-based phones, and is currently compatible with over 100 handheld devices manufactured by Hitachi, HTC, Motorola, Nokia, palmOne, Sanyo, Samsung, Sony Ericsson and Toshiba.
Another highlight was the launch of the TSM 520 handset, primarily targeted at this segment, which has the Windows Mobile Smartphone 2003 system built in.
Its software supports a wide variety of device platforms including BREW, J2ME, Microsoft Pocket PC, Microsoft Smartphone 2003, Palm OS, and Symbian-based phones.
Jeyo Mobile Extender for Outlook and Jeyo Mobile Companion work with Windows Mobile Smartphone 2003 or 2002 or Windows Pocket PC Phone Edition 2003 or 2002.
The MPx220 features Microsoft Windows Mobile SmartPhone 2003, designed to match and transpose the Outlook desktop experience.
Support for Windows Mobile Smartphone 2003, Pocket PC 2003, Symbian Series 60 and Symbian 7.
The company is an innovator: Mitac was the first to launch smartphones using Microsoft Smartphone 2003 OS and based on Intel's XScale.