Sony Ericsson T303 Quick reference guide

May 2008
T303
Small is beautiful

White paper T303
1 May 2008
This document is published by Sony Ericsson
Mobile Communications AB, without any
warranty*. Improvements and changes to this text
necessitated by typographical errors, inaccuracies
of current information or improvements to
programs and/or equipment, may be made by
Sony Ericsson Mobile Communications AB at any
time and without notice. Such changes will,
however, be incorporated into new editions of this
document. Printed versions are to be regarded as
temporary reference copies only.
*All implied warranties, including without limitation
the implied warranties of merchantability or fitness
for a particular purpose, are excluded. In no event
shall Sony Ericsson or its licensors be liable for
incidental or consequential damages of any
nature, including but not limited to lost profits or
commercial loss, arising out of the use of the
information in this document.
This White paper is published by:
Sony Ericsson Mobile Communications AB,
SE-221 88 Lund, Sweden
Phone: [phone]
Fax: [phone]
www.sonyericsson.com/
© Sony Ericsson Mobile Communications AB,
2008. All rights reserved. You are hereby granted
a license to download and/or print a copy of this
document.
Any rights not expressly granted herein are
reserved.
First edition (May 2008 )
Publication number: EN/LZT 108 9810 R3A
Preface
Purpose of this document
This White paper will be published in several revisions as the phone is developed. Therefore, some of the
headings and tables in this document contain limited information. Additional information and facts will be
forthcoming in later revisions.
The aim of this White paper is to give the reader an understanding of the main functions and features of
this phone.
People who can benefit from this document include:
• Operators
• Service providers
• Software developers
• Support engineers
• Application developers

White paper T303
2 May 2008
Sony Ericsson Developer World
On www.sonyericsson.com/developer, developers will find documentation and tools such as phone White
papers, Developers guidelines for different technologies, SDKs and relevant APIs. The Web site also
contains discussion forums monitored by the Sony Ericsson Developer Support team, an extensive
Knowledge Base, Tips & Tricks, example code and news.
Sony Ericsson also offers technical support services to professional developers. For more information
about these professional services, visit the Sony Ericsson Developer World Web site.
Document history
Change history
2008-05-29 R3A Third revised edition
2008-04-17 R2A Second revised edition
2008-02-28 R1A First revised edition

White paper T303
3 May 2008
Contents
Product overview ....................................................................................................................... 4
Key features ............................................................................................................................. 5
Images ...................................................................................................................................... 7
Technologies in detail ................................................................................................................ 8
Functions and features ............................................................................................................. 9
Facts and figures ..................................................................................................................... 17
Technical specifications ......................................................................................................... 18
General technical data......................................................................................................... 18
Performance and technical characteristics ......................................................................... 18
USSD technical data ........................................................................................................... 19
GPRS technical data ........................................................................................................... 19
SIM AT services supported ................................................................................................. 20
Music player ........................................................................................................................ 24
Radio with RDS ................................................................................................................... 25
1.3 MP camera .................................................................................................................... 25
Pictures and animations ...................................................................................................... 25
Image decoders................................................................................................................... 25
Image encoders ................................................................................................................... 26
Short Messaging Service..................................................................................................... 26
Enhanced Messaging Service ............................................................................................. 28
Multimedia Messaging Service............................................................................................ 29
Bluetooth™ technical data ...................................................... 30
Java™ ........................................................................ 31
Web browser data .............................................................................................................. 31
Operator technical data ....................................................................................................... 32
Abbreviations ........................................................................................................................... 36
Related information ................................................................................................................. 39
Documents ............................................................................................................................. 39
Links ....................................................................................................................................... 39
Trademarks and acknowledgements ..................................................................................... 39

White paper T303
4 May 2008
Product overview
T303 is a combination of seeming opposites: small yet versatile, beautiful yet robust, appealing yet
affordable. It is a compact slider, with a height of only 83 mm. A multitude of media functions is contained
inside its metal-and-glass housing. The smooth sliding mechanism in combination with the soft rounded
shape further contribute to the overall quality feeling of the phone.
The music player is a perfect tool for listening to songs. The music can easily be organized into personal
playlists.
With the RDS FM radio, the user can preset channels and enjoy favourite tunes through the stereo
headphones.
The 1.3 MP camera enables the user to take pictures of everyday life and view them anytime on the
screen, or share them with friends using Bluetooth™ or MMS (Multimedia Messaging Service).
Other notable features of T303 are TrackID™ music recognition, MP3 ring tones, games, alarm, calculator,
calendar, predictive text input, SMS, phonebook, and Java MIDP 2.0.
Note: To provide updated information about the implemented technology and functionality of this
product, this White paper will be released in updated revisions.

White paper T303
5 May 2008
Key features
FM radio with RDS
The FM radio with RDS (radio data system) offers instant and easy access to FM radio channels. The RDS
function brings information directly to the screen, which is sent out by the currently tuned in radio station.
Just plug in the handsfree that works as an antenna and start listening to your music. The radio can also
be used as an alarm signal.
Music player
Play music files and radio recordings. The folder system enables the user to, for example, browse through
favourite tracks and create simple playlists.
1.3-megapixel camera
With the user-friendly 1.3 MP camera, taking pictures becomes easy and fun. Taking a picture and
sending it as part of a picture message is quick and simple.
1.8-inch colour screen
The 1.8-inch (128x160 pixels), full graphic, 65k colour, TFT (Thin Film Transistor) screen provides a high-
quality display.
Short Message Service (SMS)
SMS lets you send text messages using your mobile phone.
Picture messaging
Multimedia Messaging Service (MMS) is a logical extension of SMS and EMS. MMS lets you combine
sound and image into multimedia messages.
WML/HTML-MP Web browser support
Browse the Internet and look at Web sites.
Bluetooth™ wireless technology
Several devices (simultaneous Bluetooth™ connections) can be connected up to 10 metres (33 feet) away
using Bluetooth wireless technology. For example, when the phone rings, it can be answered with a
Bluetooth headset. Images can be wirelessly sent to another phone. The phone and a computer can
exchange data such as images, music files and calendar data. Bluetooth version 2.0 is supported.
Java™
Download additional information and entertainment applications. This gives users a chance to personalize
the functions and features in their phones, and developers the opportunity to create new applications.
Gaming
Gaming is a very popular feature in mobile phones, and with Java, users can download new games and
skill levels to further enhance their entertainment experience. Two embedded games are included in the
phone at purchase.

White paper T303
6 May 2008
TrackID™
TrackID™ can identify a track playing on the phone radio, or in the room. The phone samples a few
seconds of the song, then connects to an online database, which identifies the song and returns title,
artist and album information.
Polyphonic sound
Polyphonic ringtones, 32 simultaneous sounds.
Calendar
Fully functional calendar with day or month view, and a task reminder.
Alarm
Set a time and your phone will ring at the time. Choose the radio to be your alarm ringtone and wake up to
your favourite station.
Vibrating alert
The phone vibrates and you feel when a call comes in.

White paper T303
7 May 2008
Images

White paper T303
8 May 2008
Technologies in detail
This chapter offers a detailed description of the technologies available in this product.

White paper T303
9 May 2008
Functions and features
The following table is a description of the features in this product. It also compares this product with two
other Sony Ericsson products.
Feature T303 T250 T280
Alarm clock Yes Yes Yes
Antenna
Built-in
Yes Yes Yes
Backlight
Illuminates your phone screen
Yes Yes Yes
Battery 3.6 V, 930 mAh,
Lithium Polymer
3.6 V, 780 mAh,
Lithium Polymer
3.6 V, 780 mAh,
Lithium Polymer
Battery charging time At least 90%
charged within 2
hours
At least 90%
charged within 2
hours
At least 90%
charged within 2
hours
Bluetooth™ wireless technology
Wireless connectivity between devices within a
range of up to 10 metres (33 feet). Support for
specification of the Bluetooth System, version
2.0
Yes No Yes
Calculator Yes Yes Yes
Calendar Yes,
fully functional
calendar with
Today and All
view. Reminder
can be set. No
synchronisation
Yes,
fully functional
calendar with
Today and All
view. Reminder
can be set. No
synchronisation
Yes,
fully functional
calendar with
Today and All
view. Reminder
can be set. No
synchronisation
Call list
View calls made and calls received
Yes Yes Yes
Camera 1.3 MP VGA 1.3 MP
Camera key Yes,
shortcut on the
navigation key
Yes,
shortcut on the
navigation key
Yes,
shortcut on the
navigation key
Chinese input method
Text input methods based on Simplified or
Traditional Chinese; Bopomofo, Pinyin or
Stroke
Yes Yes Yes

White paper T303
10 May 2008
Clock
Visible clock on the screen
Yes Yes Yes
Co-branding area 8 x 22 mm 8 x 22 mm 8 x 22 mm
Colour Dark metal: black
front, black back
Bright metal:
silver front, silver
back
Black
Silver
Metallic Black
Light
Champagne
Contacts Yes,
phonebook with
fields for phone
number, and
name.
Save up to 500
contacts (1500
phone numbers
in total)
Yes,
phonebook with
fields for phone
number, and
name.
Save up to 300
contacts (900
phone numbers
in total)
Yes,
phonebook with
fields for phone
number, and
name.
Save up to 300
contacts (900
phone numbers
in total)
Conference calls
Support for multi-party calling
Yes Yes Yes
Content online
Downloadable pictures and ringtones are
available online
Yes Yes Yes
Copyright protection - DRM
DRM (Digital Rights Management) features the
rights and copy protection of downloaded
content (audio, pictures, music tones,
entertainment features such as games and so
on)
Level 1 forward
lock
Level 1 forward
lock
Level 1 forward
lock
CSS
Cascading Style Sheets, the de facto standard
style sheet language on the Web, specified by
W3C
Yes
Wireless CSS 1.1
No Yes
Wireless CSS 1.1
Design Slider phone,
hairline finish
front, hairline
finish and
rubber/plastic
back
Stick phone,
gloss finish front,
painted back
cover
Stick phone,
gloss finish front,
painted back
cover
Feature T303 T250 T280

White paper T303
11 May 2008
Device Management (DM)
DM utilizes GPRS as bearer of the provisioning
data (basic network connectivity needs to be in
place) and allows the operator to access the
phone and check and set different settings
such as network connectivity (GPRS), MMS,
and WAP. DM is achieved by supporting Over
The Air provisioning 7.1 (OTA), OMA Client
Provisioning 1.1 (CP) and OMA DM 1.1.2
No Yes Yes
Digital camera menu Yes No Yes
Digital zoom Yes,
2x for VGA
4x for QVGA
No Yes,
2x for VGA
4x for QVGA
EMS (Enhanced Messaging Service)
Text messaging with pictures and sounds
Yes Yes Yes
Exterior description
Length (mm):
Width (mm):
Thickness (mm):
83
47
14.7
100.2
44.7
12.7
100.2
44.7
12.7
Fast port
A system connector which enables faster data
transfer from phone to computer and
computer to phone
Yes
(no computer
connection
support)
Yes
(no computer
connection
support)
Yes
(no computer
connection
support)
File manager
Folder structure storage to help you save and
organize pictures, sounds and other phone
content
Yes Yes Yes
FM radio with RDS
FM radio with presets, auto and manual
search. The handsfree is used as an antenna.
The radio can also be used as an alarm signal
Yes
Frequency range
87.5-108 MHz,
channel search
step 0.05 MHz
Yes Yes
Games download
Add more games to your phone
Yes No Yes
Games embedded Yes Yes Yes
Feature T303 T250 T280

White paper T303
12 May 2008
GPRS
General Packet Radio Services – a
communications standard enabling packet
data transfer similar to Internet at 28.8–56.6
Kbps. It is recommended that you have GPRS
to use MMS and content download services
Yes,
multislot class 10
supported (4+2)
Yes,
multislot class 8
supported (4+1)
Yes,
multislot class 8
supported (4+1)
HTML
HyperText Markup Language, the standard
Internet communications protocol
Yes No Yes
Icon Desktop
A graphic icon desktop with interactive icons
Grid view
(9 icons)
Grid view
(9 icons)
Grid view
(9 icons)
Infrared port
A wireless connector enabling you to connect
your phone to a laptop or other infrared device
in order to share pictures and sounds
No Yes No
Java™
Support for J2ME™ technology
Yes No Yes
Keys - navigation and more 4+1 way
navigation
key with preset
shortcuts
2 selection keys
Shortcut key
C key
Call key
End/on/off key
4 way navigation
with preset
shortcuts
2 selection keys
Call key
End/on/off key
4 way navigation
with preset
shortcuts
2 selection keys
Call key
End/on/off key
Keys - keypad 12
alphanumeric
12
alphanumeric
12
alphanumeric
Keys - side and other No No No
Keypad lock
Lock the phone keys to prevent activation of a
function in the phone
Yes Yes Yes
Feature T303 T250 T280

White paper T303
13 May 2008
Lunar calendar
A calendar system used in China and other
parts of Asia. A lunar month is determined by
the period required for the moon to complete
its full cycle of 29.5 days
Yes Yes Yes
Memory (built-in)
Phone memory that is free for the user to use
for pictures, sounds and more
Up to 8.0 MB Up to 3.0 MB Up to 10 MB
Menu shortcuts
Dedicated shortcuts to frequently used phone
functions
Yes
(fixed shortcuts)
Yes
(fixed shortcuts)
Yes
(fixed shortcuts)
MMS (Multimedia Messaging Service)
Picture messaging with text and sound
Yes Yes Yes,
MMS1.2 features
except for
vCalendar
Music player
A digital music player. The user can play music
files, and to organize tracks into groups and
create simple playlists. A practical play/stop
function makes it easy to listen to music
Yes No No
Networks GSM (R99)
Triband:
• 900/1800/
1900
• 850/1800/
1900
GSM (R97)
Dualband:
• 900/1800
• 850/1900
GSM (R97)
Dualband:
• 900/1800
• 850/1900
OTA settings
WAP and other settings can be sent over-the-
air to the phone
Yes Yes Yes
Picture gallery
A thumbnail image gallery
Yes No No
Picture phonebook
Add a picture to a saved contact. The picture
appears on the screen when the saved contact
calls
Yes No No
Picture wallpaper
Background picture seen on the screen when
the phone is in standby mode
Yes Yes Yes
Feature T303 T250 T280

White paper T303
14 May 2008
Polyphonic ringtones 32 32 32
Predictive text input
When you write text, predictive text input
software predicts what word you are writing
and finishes it for you. The prediction is based
on previous words used and a customizable
dictionary
Yes Yes Yes
Redial
Identify and redial the most recent caller
Yes No No
Screen
Type:
Size:
Resolution:
Technology:
Colours displayed together:
Backlight colour:
Full graphical
1.8 inches
128x160 pixels
TFT
65,000 (16 bit)
Blue
Full graphical
1.7 inches
128x160 pixels
TFT
65,000 (16 bit)
Blue
Full graphical
1.7 inches
128x160 pixels
TFT
65,000 (16 bit)
Blue
Screen saver
When the phone has not been used for a while,
a screen saver activates and the phone goes
into sleep mode
Yes No No
SIM card lock
Protect the SIM card with a four-digit PIN code
Yes Yes Yes
Sleep mode
A power saving feature that minimizes battery
power consumed when the phone is in
standby
Yes Yes Yes
SMS, long (text messaging)
Concatenated SMS text messaging
Yes,
up to 6
concatenations
Yes,
up to 6
concatenations
Yes,
up to 6
concatenations
Sony Ericsson Update Service
Download the latest operator approved version
of the mobile phone software via a computer
Yes No No
Sound recorder
A mini recording device in your phone that lets
you record voice messages or other sounds
Yes No No
Feature T303 T250 T280

White paper T303
15 May 2008
Speakerphone
Loudspeaker suitable for using the phone as
an office handsfree
Yes Yes Yes
Speed dialling
Allocating contacts in your phonebook to
specific keys on the keypad
Yes Yes Yes
Standby time Up to 400 hours Up to 300 hours Up to 300 hours
Status view
Shows the network being used, time and other
status information
Yes Yes Yes
Stopwatch Yes Yes Yes
Tal k tim e Up to 9 hours Up to 7 hours Up to 7 hours
Tas k s
Keep track of important things to do
Yes No No
Themes display
Phone menu texts and background graphics
Yes Yes Yes
Timer
Set your phone to alert after a specific time
lapse
Yes Yes Yes
TrackID™
A service for music recognition
Yes No No
USB connectivity support
Connect the phone to a computer using a USB
cable
No
(but support for
USB charging
and USB mass
storage)
No No
Vibrating alert
The phone vibrates when a call comes in or
when an alarm goes off
Yes Yes Yes
Voicemail
Support for voicemail operator service
including automatic answering and message
recording
Yes Yes Yes
Feature T303 T250 T280

White paper T303
16 May 2008
WAP
A mobile Internet standard enabling you to
access specially designed Internet sites
Yes,
2.0
Yes,
1.2.1
Yes,
2.0
WAP 2.0 XHTML™
A mobile Internet standard enabling you to
access specially designed Internet sites. WAP
2.0 supports colour and interactive lists
Yes,
XHTML Mobile
profile 1.0
No Yes,
XHTML Mobile
profile 1.0
Weight
With battery: 93 g 82 g 82 g
Feature T303 T250 T280

White paper T303
17 May 2008
Facts and figures
This chapter gives a detailed listing of all the technical data relating to the product. Comprehensive
descriptions of performance and technical characteristics are presented in table format for quick and easy
access.

White paper T303
18 May 2008
Technical specifications
General technical data
Performance and technical characteristics
System GSM/GPRS, Tri-band 900/1800/1900 and 850/1800/1900 MHz
Speech coding HR, FR, EFR, AMR supported where available, for high speech quality
GSM SIM/USIM card Small plug-in card, 1.8 V and 3 V
Memory (user free) Up to 8 MB
Data transfer speeds Up to 85.6 Kbps (downlink)
Up to 21.4 Kbps (uplink)
Dimension GSM 850 GSM 900 GSM 1800 GSM 1900
Frequency range (MHz) TX: 824–849
RX: 869–894
TX: 880–915
RX: 925–960
TX: 1710–1785
RX: 1805–1880
TX:1850–910
RX:1930–1990
Channel spacing 200 kHz 200 kHz 200 kHz 200 kHz
Number of channels 124 Carriers *8
(TDMA)
174 Carriers *8
(TDMA)
374 Carriers *8
(TDMA)
299 Carriers *8
(TDMA)
Modulation GMSK GMSK GMSK GMSK
TX phase accuracy < 5º RMS Phase
error (burst)
< 5º RMS Phase
error (burst)
< 5º RMS Phase
error (burst)
< 5º RMS Phase
error (burst)
Duplex spacing 45 MHz 45 MHz 95 MHz 80 MHz
Frequency stability +/- 0.1 ppm +/- 0.1 ppm +/- 0.1 ppm +/- 0.1 ppm
Voltage operation
(nominal)
3.6 V 3.6 V 3.6 V 3.6 V
Transmitter RF power
output
33 dBm Class 4
(2 W peak)
33 dBm Class 4
(2 W peak)
30 dBm Class 1
(1 W peak)
30 dBm Class 1
(1 W peak)
Transmitter output
impedance
50 ohm 50 ohm 50 ohm 50 ohm
Transmitter spurious
emission (according to
specification)
< -36 dBm up to
1 GHz
< -30 dBm over 1
GHz
< -36 dBm up to
1 GHz
< -30 dBm over 1
GHz
< -30 dBm < -30 dBm
Receiver RF sensitivity Better than – 102
dBm
Better than – 102
dBm
– 102 dBm – 102 dBm
Receiver RX bit error
rate
< 2.4% < 2.4% < 2.4% < 2.4%

White paper T303
19 May 2008
USSD technical data
GPRS technical data
Feature Support
USSD support GSM Phase 1/2 (cross-phase compatibility)
GPRS behaviour according to class 10
Mode support mode UI-mode supported
SAT initiated USSD supported
UI-mode details Ability to scroll up and down in USSD messages
Dimension Support
Compatible GPRS and SMG
specifications
Release 99 according to ETSI specification
Data rates Multislot class 10 supported (4+2).
CS-1, CS-2, CS-3, CS-4
9.05 Kbps, 13.4 Kbps, 15.6 Kbps, 21.4 Kbps supported (network-
dependent)
Indicator of attachment to the
GPRS service
Yes, an icon in the top left corner, a filled triangle if attached
Indicator of PDP context activation No
Medium Access Modes) Dynamic allocation
Support of Packet Control
Channels (PBCCH/PCCCH)
Yes
Network operation mode NOM I, II, III
Support of GPRS combined
procedures
Yes
Network control mode NC0 and 2
Support of access in 2 phases Yes
Support of PRACH on 11 bits Yes
Support of GPRS re-selection C31/
C32
Yes
Support of static and dynamic
addressing
Yes
Support of power control uplink
and downlink
Uplink = yes, downlink is a network feature
Support of ciphering algorithms GEA1, GEA2
Support of compression algorithms No