Forms of Cellular Phones

Intro

Cellular phones may have different forms. These are described below.

Forms

Form	Picture	Example	Comment
Candybar		Nokia 1011	Candybar is the most common form among cellular phones. The first device was the Nokia 1011, which was released on 1992-11-10.
Semi-Clamshell		Motorola MicroTAC International 5080	The first clamshell phone was the Motorola MicroTAC, which was released in 1989. The GSM version MicroTAC International 5080 was released in 1994. Since the flap was only used to protect the keyboard, it is a semi-clamshell cellular phone.
Clamshell		Motorola StarTAC 70	The first real clamshell phone was the Motorola StarTAC 70, which was released in 1996. The flap contained the loudspeaker and thus had an active function.
Slider		Siemens SL10	The first sliding cellular phone was the Siemens SL10, which was released in 1999. On sliders, the keyboard can be uncovered by pushing (instead of folding) the flap.
Swivel		Motorola V70	Swivel phones reveal the keyboard by turning their flap sideways. The first swivel phone was the Motorola V70, which was released in 2002.
Foldable		Royole FlexPai	Foldables are smartphones with a foldable screen. The first foldable was the Royole FlexPai from 2018, while Samsung was the first major brand to launch the Galaxy Fold a year later. There are two variants of this form factor. The screen is either folded vertically to make a smaller smartphone, similar to a clamshell phone, or horizontally to enlarge the screen, similar to a tablet.
Watch Phone		Samsung Watch Phone	In contrast to a smartwatch, watch phones also include a cellular phone part which can be used to place calls directly on the watch. The first watch phone was the Samsung SPH-WP10 from 1999. In 2003 Samsung introduced the first GSM watch phone by the simple name Watch Phone.
Carphone		Nokia 810	Carphones are actually the classic among cellular phones. The Nokia 810 was the first dualband GSM device and was released in 2003.

Overview

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