Sony Ericsson K850i

The Sony Ericsson K850i is a high-end mobile phone when released in October 2007. It was announced in June 2007 as the flagship product in Sony Ericsson's K ("Kamera") series, with a 5 megapixel CMOS camera sensor. The K850 was the first Sony Ericsson phone released outside of NTT DoCoMo to support microSD and microSDHC along with Sony's traditional M2. It also introduces the usage of three touch-sensitive softkeys right under the display and a new form of navigation button, omitting the classic joystick introduced with the Ericsson T68. The camera interface has been revamped to resemble the format of cybershot digital cameras. According to the manufacturer the UMTS talk time has been significantly increased to 3 hours 30 min over its predecessor, the K800 and K810.[1] (K800 2 hrs 30 min). It was Sony Ericsson's first 3.5G HSDPA supporting mobile phone, and was also the first 3G "global" mobile with supporting all major operating network frequency in the world including GSM 850, GSM 900, GSM 1800, GSM 1900, HSDPA, UMTS 850, UMTS 1900, UMTS 2100.[2]

Sony Ericsson K850i
Compatible networksUMTS 850, UMTS 1900, UMTS 2100, GSM 850, GSM 900, GSM 1800, GSM 1900
First releasedOctober 2007 (2007-10)
PredecessorSony Ericsson K800
Sony Ericsson K810
SuccessorSony Ericsson C905
Dimensions102 × 48 × 17 mm
Mass118 g (0.260 lb)
Memory40 MB integrated, Memory Stick Micro (M2) 512 MB in box, SanDisk microSD transflash supported
Battery930 mAh (Li-Polymer)
Display2.2” QVGA (240×320 pixels), 262,144 (18-bit) colour TFT LCD
Connectivity3.5 Mbit/s HSDPA, W-CDMA, EDGE, GPRS, HSCSD, CSD, Bluetooth 2.0, USB (with Mass Storage Mode, PictBridge Mode support)

Design and features

The phone introduces a new button in the Cyber-shot line: on the right side a switch allows choosing between photo, video and playback mode. The phone is available in the colours "Luminous Green", "Velvet Blue" and "Quicksilver Black".

Key features include:

Camera Information

5.04 megapixel CMOS sensor, 16x digital zoom, natural color rendering, and built in xenon flash plus three additional LEDs for autofocusing and can be used for video recording. It also features Bestpic (Sony Ericsson's brand name for burst mode) which captures nine images in a row then you can choose the ones you want to save. In camera mode the keypad is differently lit so the user can easily find the camera shortcut buttons (Shoot mode, Scenes, Self-timer, Flash mode).

In common with the K810i and the K800, programs called Photo Fix, HP print and Face Warp are bundled with the K850i. Users can also easily increase the brightness and the contrast of the photo with PhotoFix and PhotoDJ.

Video recording is QVGA (320×240) at 30 frames per second. (K800 QCIF (176×144) @ 15 frame/s.) Supports Image and Video Stabilizer so videos and photos taken would be less likely to appear blurred and shaky. There have been major software problems in the past but now have been solved. Moreover, as in most Sony Ericsson phones, the camera software, called camdriver, can be modified to bring new features along with considerable improvement. The line of camdrivers known as Cybershot Xperience, developed by Hasaan Rafique (known online as Witchking) is the most promising as it implements many additional features like Manual Focus, Contrast, Saturation, Colour Balance, ISO, Shutter-speed and so on. It also allows the user to increase the video recording resolution.

Specifications

Screen

  • 2.2” QVGA (240×320 pixels), 262,144 (18-bit) colour TFT LCD

Available colours

  • Luminous Green
  • Velvet Blue
  • Quicksilver Black

Sizes

  • 102 × 48 × 17 mm (4 × 1.9 × 0.7 in)

Weight

  • 118 g (4.2 oz)

Memory

  • Memory Stick Micro (M2) 512 MB in box (maximum capable – 16 GB),[3] a MicroSD card can also be used instead of the Memory Stick Micro card.
  • Phone memory approximately 40 MB depending on the preconfiguration settings

Battery

  • BST-38 3.6 V, 930 mAh, lithium polymer
  • Talk time GSM/UMTS: Up to 9 h/3 h 30 min
  • Standby time GSM/UMTS: Up to 400 h/350 h
  • Video call time (K850): Up to 3 h 20 min

Variants

Firmware list
  • R1CA029 – First Release
  • R1CA037 (SEUS – 2007-12-03)
  • R1DA038 (SEUS – 2007-12-21)
  • R1DA039 (SEUS – 2007-12-21)
  • R1EA031 (SEUS – 2008-02-21)
  • R1EA037 (SEUS – 2008-04-12)
  • R1FA035 (SEUS – 2008-06-18)

SEUS – Sony Ericsson Update Service

gollark: As I said, you wouldn't have to.
gollark: Anyway, point is, software is more than just Windows applications programmed in C++, it's very general.
gollark: * wire switches to your processor's pins and flick them really fast
gollark: * ARM ASSEMBLY
gollark: Oops! Guess I'll... rewrite... potatOS... in C++?

See also
Other notable 5-megapixel phones of the time

References
  1. "Sony Ericsson develops its camera phone range". Archived from the original on July 15, 2007. Retrieved June 16, 2007.
  2. "Sony Mobile Phone K850i (綠色)". Sonystyle.com.hk. Retrieved 2012-07-23.
  3. "K850i supports 8 GB M2". Retrieved April 4, 2008.
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