BA Cover Kestrel EF81 + ara.qxd  22.12.2005  13:48 Uhr  Seite 1
EF81 
Issued by 
BenQ Mobile GmbH & Co. OHG 
Haidenauplatz 1 
D-81667 Munich 
© BenQ Mobile GmbH & Co. OHG 2005 
All rights reserved. Subject to availability.
Rights of modification reserved.
Manufactured by BenQ Mobile GmbH & Co. OHG  
under trademark license of Siemens AG  
www.BenQ-Siemens.com/ef81 
cyan magenta yellow black        L I E B R E I C H , Medienproduktion
right page (1) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
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Safety precautions  ..................... 3
Phone overview  ......................... 6
Clamshell closed  ...................... 6
Clamshell open  ........................ 7
Opening/closing the clamshell .... 9
Display symbols  ....................... 11
Getting started ......................... 13
Inserting the SIMcard/ 
Micro SD card ......................... 13
Inserting the battery  .............. 14
Removing the battery ............. 15
Charging the battery  .............. 15
Operating time and 
temperature  .......................... 16
Switching phone on/off, 
entering PIN  ............................. 17
Switching the phone on  ......... 17
Switching the phone off ......... 17
Offline mode  ......................... 18
Emergency number (SOS)  ...... 18
General instructions  ................ 19
Standby mode  ....................... 19
Signal strength  ...................... 19
Connectivity  .......................... 20
Digital Rights Mgmt. (DRM) ...... 20
User guide  ............................. 20
Main menu  ............................ 21
Tabs  ...................................... 21
Navigation key ....................... 21
Outer  softkeys ....................... 22
Menu control  ......................... 22
Standard functions ................. 22
Table of Contents
1
Security  .................................... 25
PIN codes  ............................... 25
Connecting to Windows® PCs ...27
Text entry  ................................. 28
Calling  ...................................... 32
Video calls .............................. 32
Setting the volume  .................33
Accepting a call  ...................... 34
Rejecting a call  ....................... 34
Conference  ............................ 36
Tone sequences (DTMF)  ......... 39
Contacts .................................... 40
Voice-activated dialling ........... 46
Call records ............................... 49
Call log lists  ............................ 49
Duration/charges .................... 50
Camera  ..................................... 52
Create message  ........................ 57
SMS/MMS ............................... 57
E-mail  .................................... 60
Inbox  ........................................ 62
Message lists  ............................ 69
Drafts ..................................... 69
Sent messages  ....................... 69
Message settings ...................... 70
SMS settings ........................... 70
MMS settings  ......................... 72
E-mail settings ........................ 74
CB settings  ............................. 77
Voice mail ................................. 79
Settings .................................. 79
See also index at the end of this User Guide
Table of 
Contents
See also index 
at the end of 
this User 
Guide
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left page (2) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
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Table of Contents
Internet  .................................... 80
Enter URL ............................... 80
Bookmarks list ........................ 80
History ................................... 80
Browser settings  .................... 80
Games  ...................................... 86
Organiser  ................................. 87
Calendar  ................................ 87
Dictat. machine ...................... 90
Time zones  ............................ 90
Remote sync  .......................... 90
Extras  ....................................... 92
My menu  ............................... 92
SIM toolkit (optional)  ............. 92
Alarm clock ............................ 93
Calculator  .............................. 94
Unit converter ........................ 94
Sound recorder  ...................... 95
Stopwatch  ............................. 96
Media player  ............................ 97
My stuff .................................. 101
Settings  .................................. 104
Profiles  ................................ 104
Ringtones  ............................ 105
Themes ................................ 106
Display ................................. 107
Vibration (silent alert)  .......... 108
Connectivity  ........................ 109
Shortcuts  ............................. 113
Call setup ............................. 114
Phone .................................. 117
Clock  ................................... 120
Security ................................ 122
Network ............................... 124
Accessories  .......................... 126
Mobile Phone Manager  .......... 127
Questions & Answers  ............. 129
Customer Care ........................ 133
Care and maintenance  ........... 135
Product data  ........................... 136
SAR  ......................................... 137
Accessories  ............................. 138
Guarantee certificate (UK)  ........140
Guarantee certificate (IRL)  ........140
License Agreement .................142
Menu tree ............................... 145
Index ....................................... 151
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right page (3) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
Safety precautions
3
Safety precautions
Information for parents 
Please read the operating instructions and safety precautions carefully before use. 
Explain the content to your children and the hazards associated with using the phone.
Remember to comply with le-
gal requirements and local re-
strictions when using the 
phone. For example, in aero-
planes, petrol stations, hospi-
tals or while driving.
Mobile phones can interfere 
with the functioning of medical 
devices such as hearing aids 
or pacemakers. Keep at least 
20cm/9 inches between phone 
and pacemaker. When using 
the mobile phone hold it to the 
ear which is further away from 
the pacemaker. For more infor-
mation consult your doctor.
Tones, music and handsfree 
talking are reproduced through 
the loudspeaker. Do not hold 
the phone to your ear when 
it rings or when you have 
switched on the handsfree 
function. Otherwise you risk 
serious permanent damage 
to your hearing.
Only use original batteries 
(100% mercury-free) and 
-charging devices. Otherwise 
you risk serious damage to 
health and property. The 
battery could explode, for 
instance.
Small parts such as the SIM 
card, sealing stop, lens ring 
and lens cap as well as the 
Micro SD Card can be disman-
tled and swallowed by small 
children. The phone must 
therefore be stored out of the 
reach of small children.
Permanent hearing loss may 
occur if you use ear- or head-
phones at high volume.You 
can adapt over time to a higher 
volume, which may sound nor-
mal but can be damaging to 
your hearing. Set your volume 
to a safe level. If you experi-
ence ringing in your ears, re-
duce the volume or discontinue 
use of your system.
The mains voltage specified on 
the power supply unit (V) must 
not be exceeded. Otherwise 
the charging device may be 
destroyed. 
The power supply must be 
plugged into an easily accessi-
ble AC mains power socket 
when charging the battery. The 
only way to turn off the charg-
ing device after charging the 
battery is to unplug it.
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left page (4) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
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The phone may cause interfer-
ence in the vicinity of TV sets, 
radios and PCs.
Do not place the phone near to 
electromagnetic data carriers 
such as credit cards and floppy 
disks. Information stored on 
them could be lost.
Use only original accessories. 
This will avoid potential risks to 
health or property and ensure 
compliance with all relevant 
regulations.
Improper use will invalidate the guarantee! 
These safety instructions also apply to 
original accessories.
As mobile devices offer a range of func-
tions, they can be used in positions other 
than the head, such as on the body. In this 
case, separation distance of 1.0 cm is 
required.
4
Safety precautions
You may only open the phone 
to replace the battery (100 % 
mercury-free), SIM and Micro 
SD Card. You must not open 
the battery under any circum-
stances. All other changes to 
this device are strictly prohibit-
ed and will invalidate the 
guarantee.
All electrical and electronic 
products should be disposed of 
separately from the municipal 
waste stream via designated 
collection facilities appointed 
by the government or the local 
authorities.
This crossed-out wheeled bin 
symbol on the product means 
the product is covered by the 
European Directive 
2002/96/EC.
The correct disposal and sepa-
rate collection of your old appli-
ance will help prevent potential 
negative consequences for the 
environment and human 
health. It is a precondition for 
reuse and recycling of used 
electrical and electronic 
equipment.
For more detailed information 
about disposal of your old ap-
pliance, please contact your 
city office, waste disposal serv-
ice or the shop where you pur-
chased the product. 
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right page (5) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
Safety precautions
5
Before using Bluetooth accessories, or a 
mobile phone inside a vehicle, check the ve-
hicle user guide for any limitations on the use 
of these products. 
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7
Bluetooth®
Your phone has a Bluetooth interface. This 
makes it possible to establish a wireless 
connection of your phone with a headset 
of a car kit, or with other Bluetooth-enabled 
devices.
In order to establish a secure link between 
the devices and to prevent a third party from 
having access to your phone, you should 
observe the following points:
• The initial connection between two devic-
es, what is called "pairing", should take 
place in familiar surroundings. 
• Both devices must be able to identify 
themselves one time by using a pass-
word/PIN. To ensure sufficient security, 
you should choose a 16-digit number com-
bination for a password that would be diffi-
cult to guess (if a PIN has not been 
assigned).
• An automatic connection acceptance 
("connection without confirmation") should 
only be used in exceptional cases. 
• In general, only trustworthy devices should 
be linked in order to minimize security 
risks. 
• You should restrict the "visibility" of your 
phone if possible. This will make it much 
more difficult for unknown devices to 
establish a connection with your phone. 
To do this, deactivate visibility in the 
Bluetooth menu (page 109). 
• The name of your phone is transmitted in a 
Bluetooth connection. The factory default 
is the "Bluetooth ID". The first time Blue-
tooth is activated, or later in the Bluetooth 
menu, you can change this name 
(Bluetooth name, page 110).
• If Bluetooth is not needed, this function 
should be deactivated. 
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6
Phone overview
Phone overview
Clamshell closed
1  Outer display
2 - 4 Outer  softkeys
 
The current functions of these keys are 
shown in the bottom line of the outer 
display as symbols.
Use functions while clamshell is 
closed. The outer  softkeys have no 
function if the clamshell is open. 
In standby mode:
Start the selected application.
Press and hold: Lock/unlock 
outer  softkeys. 
2  ‚ 
3  Ä 
4  Œ/ˆ Scroll to select available 
application ;/
right page (7) of EF81 FUG en, A31008-H2640-A1-3-7619 (27.04.2006, 13:51)
Clamshell open
1  Earpiece
2  Main display
3  Camera lens
4  A Call key
Phone overview
7
Z  W  
01.12.2005
10:10 
Service provider
Contacts ƒ Music
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Dial the number/name displayed/high-
lighted, take calls. Open the call log lists 
in standby mode.
5  B On/Off/End key
• Switched off: 
Press and hold to switch on.
• In standby mode: 
Press and hold to switch off.
Press briefly to open the switch 
off menu (page 17). 
• During a conversation or in an appli-
cation: Press briefly to finish. 
• In menus: Press and hold to go back 
Press to open the video mode. 
to standby mode.
6  j Video call key
7  k Internet key 
8  i Task key
Open the browser if not predefined.
Press briefly: Open task switcher.
Press and hold: Open the main menu.
9  l Clear key
Text input: Clear characters one by one 
in text input mode. Press and hold to 
delete text quickly.
Lists/Input fields: Delete highlighted 
item(s).
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