The Sony Ericsson K750, introduced in June 2005, is a high-end

mobile phone A mobile phone or cell phone is a portable telephone that allows users to make and receive calls over a radio frequency link while moving within a designated telephone service area, unlike fixed-location phones ( landline phones). This rad ...

, the successor to the now discontinued K700, and which was succeeded by the

K800i The Sony Ericsson K800i, and its variant, the Sony Ericsson K790, are mobile phone handsets manufactured by Sony Ericsson. Launched in July 2006 (for the K800i in the UK market; others may vary), the phones are the successor to the Sony Ericsson ...

in Q2 2006. Before official release, K750 was known by its

codename A code name, codename, call sign, or cryptonym is a code word or name used, sometimes clandestinely, to refer to another name, word, project, or person. Code names are often used for military purposes, or in espionage. They may also be used in ...

Clara. There also was a

T-Mobile T-Mobile is the brand of telecommunications by Deutsche Telekom Deutsche Telekom AG (, ; often just Telekom, DTAG or DT; stylised as ·T·) is a partially state-owned German telecommunications company headquartered in Bonn and the largest telec ...

exclusive version called D750i. Its hardware was similar to the K750i had T-Mobile branding with a light blue/white body and looked very similar to the

Sony Ericsson W800 The Sony Ericsson W800 is a music-oriented mobile phone announced on 1 March 2005, the first from Sony Ericsson to use the Walkman brand. The phone features Bluetooth v1.2 (with full Bluetooth 2.0 compliance), Infrared and USB connectivity. De ...

Design

The K750i is a

candybar A candy bar is a type of portable candy that is in the shape of a bar. The most common type of candy bar is the chocolate bar, including both bars made of solid chocolate and combination candy bars, which are candy bars that combine chocolate wi ...

style phone that weighs 99

gram The gram (originally gramme; SI unit symbol g) is a Physical unit, unit of mass in the International System of Units (SI) equal to one thousandth of a kilogram. Originally defined in 1795 as "the absolute Mass versus weight, weight of a volume ...

s (3.5

ounce The ounce () is any of several different units of mass, weight, or volume and is derived almost unchanged from the , an Ancient Roman unit of measurement. The avoirdupois ounce (exactly ) is avoirdupois pound; this is the United States ...

s), with its buttons that can be used with any finger. It has the 'dual-front' design common to most Sony Ericsson mobile phones since the T610, with the back of the mobile phone designed like a digital camera and intended to be held sideways to take photographs. The K750i is available in four colours, Blue, Oxidized Black, metallic red and Blasted Silver (the latter of which is exclusive to

Vodafone Vodafone Group Public Limited Company () is a British Multinational company, multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates Service (economic ...

in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

) with a red version later released. The central joystick button is used for selecting options and navigating menus, with the "C" button as an 'undo' or 'delete' button, and the arrow-labelled button as a 'return' or 'back' button. The two buttons labelled by white horizontal lines, known as 'hotkeys' or 'soft keys' perform the function of making binary decisions, labelled on the phone's display. The button in between of these 'soft keys' acts as a shortcut key, which brings up a user-customisable shortcut menu when pressed. The on/off button is located on the top of the phone next to the

IrDA IrDA is a wireless standard designed for exchanging data using infrared (IR). Infrared ports for this purpose have been implemented in portable electronic devices such as mobile telephones, laptops, cameras, printers, and medical devices. The mai ...

port.

There is one side key on the left of the phone; when pressed in standby mode, it opens either the RDS FM radio or the Media Player as selected by the user, allowing playback of

WAV Waveform Audio File Format (WAVE, or WAV due to its filename extension; pronounced or ) is an audio file format standard for storing an audio bitstream on personal computers. The format was developed and published for the first time in 1991 ...

MP3 MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg. It was designed to greatly reduce the amount ...

AAC AAC may refer to: Aviation * Advanced Aircraft, a company from Carlsbad, California * Airborne aircraft carrier, a type of aircraft * Alaskan Air Command, a radar network * American Aeronautical Corporation, a company from Port Washington, New ...

audio files, and

3GP 3GP (3GPP file format) is a digital multimedia container format defined by the Third Generation Partnership Project (3GPP) for 3G UMTS multimedia services, largely based on MPEG-4 Part 12. A 3GP container may consist of H.263 or H.264 video ...

MPEG-4 MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related ...

video files. A press of this button in media player mode plays or pauses the selected media.
The RDS FM radio has 20 user-configurable presets.
The phone also features Sony's Mega Bass technology. The left-hand side of the phone also houses the

Memory Stick The Memory Stick is a removable flash memory, flash memory card format, originally launched by Sony in late 1998. In addition to the original Memory Stick, this family includes the Memory Stick PRO, a revision that allows greater maximum storage ...

PRO Duo slot for external solid state memory, which is protected by a flexible rubber cover. On the right-hand side of the phone there are three keys - two for controlling volume, skipping through tracks in the Media Player and zooming in and out when in camera mode. If the button is pressed when the headset isn't attached the phone displays a phone status screen showing profile, memory usage, battery level, and, on some mobile networks, phone number. The included handsfree headset is also required to listen to the radio since it functions as the antenna.

Specification

Screen * 176x220

pixel In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a Raster graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, p ...

s * 262,144 colour

TFT-LCD A thin-film-transistor liquid-crystal display (TFT LCD) is a type of liquid-crystal display that uses thin-film-transistor technology to improve image qualities such as addressability and contrast. A TFT LCD is an active matrix LCD, in contrast ...

Memory * 64 MB

Sony is a Japanese multinational conglomerate (company), conglomerate headquartered at Sony City in Minato, Tokyo, Japan. The Sony Group encompasses various businesses, including Sony Corporation (electronics), Sony Semiconductor Solutions (i ...

Memory Stick PRO Duo The Memory Stick is a removable flash memory card format, originally launched by Sony in late 1998. In addition to the original Memory Stick, this family includes the Memory Stick PRO, a revision that allows greater maximum storage capacity and ...

included * Phone memory 38 MB (Actual free memory may vary due to phone pre-configuration) *

support (up to 2 GB) Networks * GSM 900 * GSM 1800 * GSM 1900 Available colors * Black * Silver Sizes * 100 x 46 x 20.5 mm (3.9 x 1.8 x 0.8 inches) Weight * 99 g * 3.5 oz Battery * Sony Standard Battery BST-37 Camera * 2

Megapixel In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a Raster graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, p ...

s * AF 4.8 mm 1:2.8

MP3 & connectivity

The phone has good all-round support for many versions of the

file format, however support for

encoded files is not as extensive.

support is good, and the phone can only properly handle LC AAC.

HE-AAC High-Efficiency Advanced Audio Coding (HE-AAC) is an audio coding format for lossy data compression of digital audio as part of the MPEG-4 standards. It is an extension of Low Complexity AAC (AAC-LC) optimized for low- bitrate applicati ...

(a.k.a. AAC+, a.k.a. eAAC) will play since HE-AAC is designed to be backwards compatible, however the SBR component will be ignored. The same is true with HE-AAC v2 (a.k.a. eAAC+), only the normal LC component of the file will be played. The SBR and parametric stereo (introduced with HE-AAC v2) is ignored. Since HE-AAC v2 encodes the sound as a mono-aural track and the stereo separation is recreated through the PS data, HE-AAC v2 files played on a K750 actually play back in mono. The phone can also be used as a

modem The Democratic Movement (, ; MoDem ) is a centre to centre-right political party in France, whose main ideological trends are liberalism and Christian democracy, and that is characterised by a strong pro-Europeanist stance. MoDem was establis ...

via

Bluetooth Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is li ...

Infrared Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those ...

USB Universal Serial Bus (USB) is an industry standard, developed by USB Implementers Forum (USB-IF), for digital data transmission and power delivery between many types of electronics. It specifies the architecture, in particular the physical ...

. According to the Sony Ericsson website, the K750 has a talk time battery life of nine

hour An hour (symbol: h; also abbreviated hr) is a unit of time historically reckoned as of a day and defined contemporarily as exactly 3,600 seconds ( SI). There are 60 minutes in an hour, and 24 hours in a day. The hour was initially establis ...

s and a standby time battery life of 600 hours.

Modding

Since K750i and W800i have essentially the same hardware specifications, soft modifications are available to convert a K750i to a W800i by using flashing software and W800i firmware. A flashed K750i can also use the flight mode option, allowing the phone to work only as a

media player Media player may refer to: *Digital media player, home appliances that play digital media *Media player software, software that plays digital media *Portable media player, portable hardware that plays digital media *Windows Media Player Windo ...

while other functions are restricted. The Activity Menu will not be present when in flight mode - instead the Walkman player appears when it is pressed.

List of firmware release (earliest to latest)

* R1A044 * R1C004 (

specific) * R1J002 * R1L002 * R1N035 * R1AA008 * R1BA013 * R1BC002 * R1CA021 * R1DB001 Additionally the K750 shares its hardware with the lesser known D750, which has the interface of the K750, yet has a chassis similar to that of the W800.

References

External links

Official K750i website
*
Official K750 specifications on the Sony Ericsson Developer website
*
Official Sony Ericsson press images of the K750
*
Official K750 whitepaperHOW TO: Dismantle a Sony Ericsson k750i and fit a new casingUpgrading K750 to W800 software (unofficial hack)K750 running W800 firmware (pictures and differences)
{{Sony Ericsson phones Mobile phones introduced in 2005

K750 The Sony Ericsson K750, introduced in June 2005, is a high-end mobile phone, the successor to the now discontinued K700, and which was succeeded by the K800i in Q2 2006. Before official release, K750 was known by its codename Clara. There al ...

Mobile phones with infrared transmitter