Siemens SX66

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Full Specifications October 19, 2026

Siemens · 2004

Siemens SX66

Name: Siemens SX66
Brand: Siemens

Siemens SX66 Windows Mobile smartphone. Announced Q4 2004. Features 3.5″ display, 670 mAh battery, 128 MB RAM.

Display 3.5"

RAM 128 GB

Storage 128MB RAM storage, SDIO/MMC slot

Battery 670 mAh

OS Microsoft Windows Mobile 2003 SE PocketPC

Build 210g, 18mm thickness

Launch

Announced 2004, Q4

Status Discontinued

Platform

OS Microsoft Windows Mobile 2003 SE PocketPC

CPU Intel Xscale PXA272 520 MHz

Display

Type TFT resistive touchscreen, 65K colors

Size 3.5 inches, 53 x 71 mm, 37.9 cm 2 (~42.7% screen-to-body ratio)

Resolution 240 x 320 pixels, 4:3 ratio (~114 ppi density)

displayother Downloadable logos

Memory

Card slot SDIO/MMC

Internal 128MB RAM

Camera

cam1modules No

Body

Dimensions 125 x 71 x 18 mm (4.92 x 2.80 x 0.71 in)

Weight 210 g (7.41 oz)

Keyboard QWERTY

SIM Mini-SIM

Battery

Type Removable Li-Ion battery

Stand-by Up to 200 h

Talk time Up to 4 h

Sound

Loudspeaker Yes

Alert types Vibration; Downloadable polyphonic, MP3 ringtones

3.5mm jack No

Comms

WLAN Wi-Fi 802.11b

Bluetooth Yes

Positioning No

Infrared port Yes

Radio No

USB Proprietary

Network

Technology GSM

2G bands GSM 850 / 900 / 1800 / 1900

GPRS Class 10

EDGE No

Features

Browser HTML (PocketIE)

featuresother Microsoft ActiveSync MP3/AAC player Predictive text input

Misc

Colors Silver

In depth

Full specifications

Announced	2004, Q4
Status	Discontinued

OS	Microsoft Windows Mobile 2003 SE PocketPC
CPU	Intel Xscale PXA272 520 MHz

Type	TFT resistive touchscreen, 65K colors
Size	3.5 inches, 53 x 71 mm, 37.9 cm 2 (~42.7% screen-to-body ratio)
Resolution	240 x 320 pixels, 4:3 ratio (~114 ppi density)
displayother	Downloadable logos

Card slot	SDIO/MMC
Internal	128MB RAM

cam1modules	No

Dimensions	125 x 71 x 18 mm (4.92 x 2.80 x 0.71 in)
Weight	210 g (7.41 oz)
Keyboard	QWERTY
SIM	Mini-SIM

Type	Removable Li-Ion battery
Stand-by	Up to 200 h
Talk time	Up to 4 h

Loudspeaker	Yes
Alert types	Vibration; Downloadable polyphonic, MP3 ringtones
3.5mm jack	No

WLAN	Wi-Fi 802.11b
Bluetooth	Yes
Positioning	No
Infrared port	Yes
Radio	No
USB	Proprietary

Technology	GSM
2G bands	GSM 850 / 900 / 1800 / 1900
GPRS	Class 10
EDGE	No

Browser	HTML (PocketIE)
featuresother	Microsoft ActiveSync MP3/AAC player Predictive text input

Colors	Silver

PhoneInsight Benchmark

23.3/100

Basic

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 24

Display 38

Battery 24.4

498,692 hitsTotal views

Siemens SX66

Launch

Platform

Display

Memory

Camera

Body

Battery

Sound

Comms

Network

Features

Misc

Full specifications

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