LG CU720 Black User manual

CU720
User Guide
CU720_Eng_1018 10/18/07 1:55 PM Page 1

Part 15.21 statement
" Change or Modifications that are not expressly approved by the manufacturer could void
the user's authority to operate the equipment. "
Part 15.105 statement
This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a
residential installation.
This equipment generates uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. if this
equipment does cause harmful interference or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected
- Consult the dealer or an experienced radio/TV technician for help.

LIMITED WARRANTY STATEMENT
1. WHAT THIS WARRANTY COVERS:
LG offers you a limited warranty that the enclosed subscriber unit and its enclosed accessories will be
free from defects in material and workmanship, according to the following terms and conditions:
(1) The limited warranty for the product extends for ONE (1) year beginning on the data of purchase
of the product.
(2) The limited warranty extends on to the original purchaser of the product and is not assignable or
transferable to any subsequent purchaser/end user.
(3) This warranty is good only to the original purchaser of the product during the warranty period as
long as it is in the U.S., including Alaska, Hawaii, U.S. Territories and Canada.
(4) The external housing and cosmetic parts shall not be covered under these limited warranty terms.
(5) Upon request from LG, the consumer must provide information to reasonably prove the date of
purchase.
(6) The customer shall bear the cost of shipping the product to the Customer Service Department of
LG. LG shall bear the cost of shipping the product back to the consumer after the completion of
service under this limited warranty.
2. WHAT THIS WARRANTY DOES NOT COVER:
(1) Defects or damages resulting from use of the product in other than its normal and customary
manner.
(2) Defects or damages from abnormal use, abnormal conditions, improper storage, exposure to
moisture or dampness, unauthorized modifications, unauthorized connections, unauthorized repair,
misuse, neglect, abuse, accident, alteration, improper installation, or other acts which are not the
fault of LG, including damage caused by shipping blown fuses spills of food or liquid.
(3) Breakage or damage to antennas unless caused directly by defects in material or workmanship.
(4) That the Customer Service Department at LG was net notified by consumer of the alleged defect
or malfunction of the product during the applicable limited warranty period.
(5) Products which have had the serial number removed or made illegible.
(6) The limited warranty is in lieu of all other warranties, express or implied either in fact or by
operations law, statutory or otherwise, including, but limited to any implied warranty of
marketability or fitness for a particular use.
(7) Damage resulting from use of non-LG approved accessories.
(8) All plastic surfaces and all other externally exposed parts that are scratched or damaged due to
normal customer use.
(9) Products operated outside published maximum ratings.
3
(10) Products used or obtained in a rental program.
(11) Consumables (such as fuses).
3. STATE LAW RIGHTS:
No other express warranty is applicable to this product. THE DURATION OF ANY IMPLIED
WARRANTIES, INCLUDING THE IMPLIED WARRANTY OF MARKETABILITY, IS LIMITED
TO THE DURATION OF THE EXPRESS WARRANTY HEREIN. LG INFOCOMM INC. SHALL
NOT BE LIABLE FOR THE LOSS OF THE USE OF THE PRODUCT, INCONVENIENCE, LOSS
OR ANY OTHER DAMAGES, DIRECT OR CONSEQUENTIAL, RISING OUT OF THE USE OF,
OR INABILITY TO USE, THIS PRODUCT OR FOR ANY BREACH OF ANY EXPRESS OR
IMPLIED WARRANTY, INCLUDING THE IMPLIED WARRANTY OF MARKETABILITY
APPLICABLE TO THIS PRODUCT. Some states do not allow the exclusive of imitation of incidental
or consequential damages or limitations on how long an implied warranty lasts; so these limitations or
exclusions may not apply to you. This warranty gives you specific legal rights and you may also have
other rights which vary from state to state.
4. HOW TO GET WARRANTY SERVICE:
To obtain warranty service, please call the following web address:
www.lgeservice.com

8
For Your Safety
Important Information
This user guide contains important information on the use and
operation of this phone. Please read all the information
carefully for optimal performance and to prevent any damage
to or misuse of the phone. Any changes or modifications not
expressly approved in this user guide could void your warranty
for this equipment.
Before You Start
Safety Instructions
WARNING! To reduce the possibility of electric shock, do not
expose your phone to high humidity areas, such as the
bathroom, swimming pool, etc.
Always store your phone away from heat. Never store your
phone in settings that may expose it to temperatures less than
32°F or greater than 104°F, such as outside during extreme
weather conditions or in your car on a hot day. Exposure to
excessive cold or heat will result in malfunction, damage
and/or catastrophic failure.
Be careful when using your phone near other electronic
devices. RF emissions from your mobile phone may affect
nearby in adequately shielded electronic equipment. You
should consult with manufacturers of any personal medical
devices such as pacemakers and hearing aides to determine if
they are susceptible to interference from your mobile phone.
Turn off your phone in a medical facility or at a gas station.
Never place your phone in a microwave oven as this will
cause the battery to explode.
IMPORTANT! Please read the TIA SAFETY INFORMATION on
page 78 before using your phone.
Safety Information
Read these simple guidelines. Breaking the rules may be
dangerous or illegal. Further detailed information is given in this
user guide.
]Never use an unapproved battery since this could damage
the phone and/or battery and could cause the battery to
explode.
]Never place your phone in a microwave oven as it will
cause the battery to explode.
]Do not dispose of your battery by fire or with hazardous or
flammable materials.
]Make sure that no sharp-edged items come into contact
with the battery. There is a risk of this causing a fire.
]Store the battery in a place out of reach of children.
]Be careful that children do not swallow any parts such as
rubber plugs (earphone, connection parts of the phone,
etc.). This could cause asphyxiation or suffocation.

9
For Your Safety
]Unplug the power cord and charger during lightning storms
to avoid electric shock or fire.
]When riding in a car, do not leave your phone or set up the
hands-free kit near to the air bag. If wireless equipment is
improperly installed and the air bag is activated, you may be
seriously injured.
]Do not use a hand-held phone while driving.
]Do not use the phone in areas where its use is prohibited.
(For example: aircraft).
]Do not expose the battery charger or adapter to direct
sunlight or use it in places with high humidity, such as a
bathroom.
]Never store your phone in temperatures less than- 4°F or
greater than 122°F.
]Do not use harsh chemicals (such as alcohol, benzene,
thinners, etc.) or detergents to clean your phone. There is a
risk of this causing a fire.
]Do not drop, strike, or shake your phone severely. Such
actions may harm the internal circuit boards of the phone.
]Do not use your phone in high explosive areas as the phone
may generate sparks.
]Do not damage the power cord by bending, twisting, pulling,
or heating. Do not use the plug if it is loose as it may cause
a fire or electric shock.
]Do not place any heavy items on the power cord. Do not
allow the power cord to be crimped as it may cause fire or
electric shock.
]Do not handle the phone with wet hands while it is being
charged. It may cause an electric shock or seriously
damage your phone.
]Do not disassemble the phone.
]Do not place or answer calls while charging the phone as it
may short-circuit the phone and/or cause electric shock or
fire.
]Only use the batteries, antennas, and chargers provided by
LG. The warranty will not be applied to products provided by
other suppliers.
]Only authorized personnel should service the phone and its
accessories. Faulty installation or service may result in
accidents and consequently invalidate the warranty.
]Do not hold or let the antenna come in contact with your
body during a call.
]An emergency call can be made only within a service area.
For an emergency call, make sure that you are within a
service area and that the phone is turned on.

10
For Your Safety
FCC RF Exposure Information
WARNING! Read this information before operating the phone.
In August 1996, the Federal Communications (FCC) of he United
States, with its action in Report and Order FCC 96-326, adopted
an updated safety standard for human exposure to radio
frequency (RF) electromagnetic energy emitted by FCC
regulated transmitters. Those guidelines are consistent with
the safety standard previously set by both U.S. and
international standards bodies.
The design of this phone complies with the FCC guidelines and
these international standards.
CAUTION
Use only the supplied and approved antenna. Use of
unauthorized antennas or modifications could impair call
quality, damage the phone, void your warranty and/or result in
violation of FCC regulations. Do not use the phone with a
damaged antenna. If a damaged antenna comes into contact
with skin, a minor burn may result. Contact your local dealer
for a replacement antenna.
Body-worn Operation
This device was tested for typical body-worn operations with
the back of the phone kept 0.79 inches (2cm) between the
user’s body and the back of the phone. To comply with FCC RF
exposure requirements, a minimum separation distance of 0.79
inches(2cm) must be maintained between the user's body
and the back of the phone. Third-party belt-clips, holsters, and
similar accessories containing metallic components should not
be used. Body-worn accessories that cannot maintain 0.79
inches(2cm) separation distance between the user's body
and the back of the phone, and have not been tested for typical
body-worn operations may not comply with FCC RF exposure
limits and should be avoided.

11
For Your Safety
Vehicle Mounted External Antenna
(optional, if available)
A minimum separation distance of 8 inches (20cm) must be
maintained between the user/bystander and the vehicle
mounted external antenna to satisfy FCC RF exposure
requirements. For more information about RF exposure, visit
the FCC website at www.fcc.gov
FCC Part 15 Class B Compliance
This device and its accessories comply with part 15 of FCC
rules. Operation is subject to the following two conditions:
(1) This device and its accessories may not cause harmful
interference, and (2) this device and its accessories must
accept any interference received, including interference that
may cause undesired operation.
Cautions for Battery
]Do not disassemble.
]Do not short-circuit.
]Do not expose to high temperature: 60°C (140°F).]
]Do not incinerate.
Battery Disposal
]Please dispose of your battery properly or bring to your
local wireless carrier for recycling.
]Do not dispose in fire or with hazardous or flammable
materials.
Adapter (Charger) Cautions
]Using the wrong battery charger could damage your phone
and void your warranty.
]The adapter or battery charger is intended for indoor use
only.
Do not expose the adapter or battery charger to direct sunlight
or use it in places with high humidity, such as the bathroom.

10
Your Phone
Phone Components
1. Earpiece
2. Left soft key
5. Display screen
3. Send key
4. Alpha numeric keys
6. 5-way joystick or
Navigation key
7. Right soft key
9. End /Power key
8. Side keys
12. Clear key
13. Microphone
10. Multi-task key
11. Camera key
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11
Your Phone
Your Phone’s Features
1. Earpiece
2,7. Left soft key/Right soft key: Each of
these keys perform the functions indicated by
the text on the display immediately above
them.
3. Send key: You can dial a phone number and
answer incoming calls. Press this key in
standby mode to quickly access the most
recent incoming, outgoing and missed calls.
4. Alpha numeric keys: These keys are used
to dial a number in standby mode and to
enter number or characters in edit mode.
5. Display screen: Displays phone status
icons, menu items, web information, pictures
and more in full color.
6. 5-way joystick or Navigation key:
Enables scrolling through names, phone
numbers, menus or settings. The 5-way
joystick is also used to move the cursor up
and down, right and left when writing text,
using the calendar, and in some game
applications. Pressing the joystick briefly
selects the function. Short press will launch
the WAP browser. Allows you to select and
confirm menu options.
8. Side keys: These keys are used to control
the volume of ringtone in standby mode and
speaker volume during a call.
9. End/Power key: Allows you to power the
phone on or off, end calls, or return to
Standby Mode.
10. Multi-task key: Multitask simultaneously
with voice and data - browse the web,
make calls, play games, send and receive
messages, and listen to MP3s. All at once.
11. Camera key: Press this key to use the
camera feature or to go directly to camera
mode.
12. Clear key: Allows you to delete the
characters entered or return you to the
previous screen.
13. Microphone: Can be muted during a call
for privacy.
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12
Your Phone
Front view
Rear view
Side view
Advice to the customer
In order to allow better antenna sensitivity LG
suggests that you hold the handset as
depicted in the figure below.
please do not cover the antenna area with
your hand during a call and using a bluetooth
connection. It may degrade speech quality.
Side key
Multi-task key
Camera key
Press this key to use the
camera feature or to go
directly to camera mode.
Half Mirror
Earpiece
Right soft key
Left soft key
5-way joystick or
Navigation key
USIM card socket
Battery release
latch
Camera
Battery terminals
Antenna
CU720_Eng_1018 10/18/07 1:55 PM Page 12

Display Information
13
Your Phone
Icon area
Soft key indications
Text and graphic
area
Area Description
First line Displays various icons.
Middle
lines
Display messages, instructions
and any information that you
enter, such as number to be
dialed.
Last line Shows the functions currently
assigned to the two soft keys.
CU720_Eng_1018 10/18/07 1:55 PM Page 13

Your Phone
14
On-Screen Icons
The table below describes various display
indicators or icons that appear on the phone’s
display screen.
Icon Description
Indicates the strength of the 3G
network signal.
Indicates the strength of the network
signal.
Indicates that GPRS service is
available.Indicates that the EDGE
service is available. Connection to the
EDGE service allows you to transfer
data at a speed of 200Kb/s(depending
on network availability). Check with
your operator for network coverage
and service availability.
Indicates that GPRS service is
available.
Indicates that Flight mode has been
activated.
Indicates the status of the battery
charge.
* The Bluetooth®word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such
marks by LG Electronics is under license. Other trademarks and trade names are those of their
respective owners. Bluetooth QD ID B013285
Icon Description
Indicates that a call is in progress.
Indicates that the alarm has been set
and is on.
Indicates the Schedule function.
Indicates the receipt of a message.
Indicates the receipt of a Voicemail.
Indicates that Ring has been set for
alert.
Indicates that Ring and vibration has
been set for alert.
Indicates that Silent has been set for
alert.
Indicates that the speakerphone has
been activated.
Indicates that the Bluetooth®function
has been activated.
Indicates that the data is being
transmitted using a Bluetooth
connection.
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15
Your Phone
Icon Description
Indicates that the connection to a
hands-free with Bluetooth has been
activated.
Indicates that the connection to a
stereo Bluetooth device has been
activated.
Indicates that the connection to a
hand-free & stereo with Bluetooth
has been activated.
Indicates that the Multitasking
function has been activated.
Indicates that the TTY has been set
and is on.
Indicates that the phone is accessing
the WAP or data service.
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16
Installing the SmartChip
When you subscribe to a cellular network, you
are provided with a plug-in SmartChip loaded
with your subscription details, such as your
PIN, any optional services available and many
others.
nImportant!
The plug-in SmartChip and its contacts can be
easily damaged by scratches or bending, so be
careful when handling, inserting or removing the
card. Keep all SmartChips out of the reach of
small children.
1. If necessary, switch off the phone by
holding down the [END] key until the
power-off image appears.
2. Remove the battery. To do so:
3. Slide the SmartChip into the SmartChip
socket so that it locks the card into place.
Make sure that the notched corner is at the
top left and the gold contacts of the card
face into the phone.
nNote
When you need to remove the SmartChip, slide
it, as shown, and take it out of the socket.
4. Insert the the battery into the battery
compartment as metal contacts meet in the
middle of the phone. Push down the top of
the battery until it snaps into place. Place
the battery cover to the phone as shown.
Getting Started
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17
Getting Started
Charging the Battery
Use of unauthorized accessories could damage
your phone and void your warranty.
To use the travel charger provided with your
phone:
1. With the battery in position in the phone,
connect the lead from the travel charger to
the bottom of the phone. Check that the
arrow on the lead connector is facing
towards the front of the phone.
2. Connect the travel charger to a standard AC
wall outlet. Only use the travel charger that
comes with the package.
nWarning
The travel charger must be unplugged before you
remove the battery, otherwise, the phone could
be damaged.
3. When a phone has been charged fully,
disconnect the travel charger from the
phone by pulling the connector out.
nNote
]If your phone is powered on while charging,
you’ll see the bars on the battery indicator icon
cycle.
When the battery is fully charged, the bars on
the battery indicator icon will flash on and off.
If the battery fails to charge completely:
]After turning the phone on and off, please
attempt to recharge the battery.
]After detaching and reattaching the battery,
please attempt to recharge the battery.
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18
Getting Started
Memory card slot
The CU720 supports the microSD memory card.
The memory card can be inserted into the side
of the CU720 device. You can use this card to
save data files such as MP3 songs.
nNote
Only use memory cards that have been approved
by the manufacturer. Some memory cards might
not be compliant with the handset.
Inserting the memory card
Insert the memory card into the slot until the
memory card is fully inserted into the slot, as
shown in the figure below:
nNote
The gold connectors must be face down and
inserted first into the memory card slot.
Removing the memory card
1. Push the memory card down into the slot
with the tip of your finger.
2. Carefully pull the memory card out of slot.
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19
Getting Started
Turning Your Phone On and
Off
1. Hold down the [END] key until the
phone switches on.
2. If the phone asks for a PIN, enter the PIN
and press the key.
The phone searches for your network and after
finding it goes to the idle screen as illustrated
below. From the idle screen, you can make or
receive a call.
nNote
The display language is preset to Automatic at
the factory. To change the language, use the
Languages menu option (Menu 9.2.6).
3. When you wish to switch the phone off,
hold down the [END] key until the
power-off image displays.
Access Codes
You can use the access codes described in this
section to avoid unauthorized use of your
phone. The access codes can be changed by
using the Change Codes feature (Menu
9.6.5).
Security code (4 digits)
The security code protects the unauthorized
use of your phone. The default security code is
set to ‘0000’ and the security code is required
to delete all phone entries and to activate the
Restore Factory Settings menu. The security
code default setting can be modified from the
Security Settings menu.
Barring Password
The barring password function is required
when you use the Call Barring function.
The password is obtained from the service
provider when you subscribe to this function.
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20
Making a Call
1. Make sure your phone is powered on.
2. Enter a phone number including the area
code. To edit a number on the display
screen, simply press the key to erase
one digit at a time.
]Press and hold the key to erase the
entire number.
3. Press the [SEND] key to call the
number.
4. When finished, press the [END] key.
Making a Call by Send Key
1. Press the [SEND] key, and the most
recent incoming, outgoing and missed
phone numbers will be displayed.
2. Select the desired number by using the
navigation key.
3. Press the [SEND] key.
Making International Calls
1. Press and hold the key and the
international access character ‘+’ will
appear.
2. Enter the country code, area code, and the
phone number.
3. Press the [SEND] key.
Ending a Call
When you have finished a call, press the
[END] key.
Making a Call From the Contacts
You can store names and phone numbers
dialed frequently in the SmartChip as well as
in the phone memory known as the Contacts.
You can dial a number by simply selecting a
name in the contacts and pressing the
[SEND] key.
General Functions
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21
Adjusting the Volume
During a call, if you want to adjust the
earpiece volume, use the side keys of the
phone.
In idle mode, you can adjust the ring volume
using the side keys.
Answering a Call
When you receive a call, the phone rings and
the flashing phone icon appears on the screen.
If the caller can be identified, the caller’s phone
number (or name if stored in your Address
Book) is displayed.
1. Open the Slide and press the [SEND]
key or the left soft key to answer an
incoming call. If Any Key has been set as
the answer mode (Menu 9.5.4), any key
press will answer a call except for the
[END] key or the right soft key.
nNote
]To reject an incoming call, press and hold the
side keys on the left side of the phone.
]If Slide Open has been set as the Answer
Mode (Menu 9.5.4), you do not need to press
any key. You can answer the call simply by
opening the slide.
2. End the call by closing the phone or
pressing the [END] key.
nNotice
You can answer a call while using the Address
Book or other menu features.
Vibrate Mode (Quick)
Vibrate Mode can be activated by pressing and
holding down the [Star] key.
Signal Strength
If you are inside a building, being near a
window may give you better reception. You can
see the strength of your signal by the signal
indicator on your phone’s display screen.
Entering Text
You can enter alphanumeric characters by
using the phone’s keypad. For example, storing
names in the Address Book, writing a
message, or creating scheduling events in the
calendar all require entering text.
The following text input methods are available
on the phone.
General Functions
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22
General Functions
T9 Mode
This mode allows you to enter words with only
one keystroke per letter. Each key on the
keypad has more than one letter. The T9 mode
automatically compares your keystrokes with
an internal linguistic dictionary to determine
the correct word, thus requiring far fewer
keystrokes than the traditional ABC mode.
ABC Mode
This mode allows you to enter letters by
pressing the key labeled with the required
letter once, twice, three or four times until the
letter is displayed.
123 Mode (Numbers Mode)
Type numbers using one keystroke per number.
To change to 123 mode in a text entry field,
press key until 123 mode is displayed.
A long press changes the mode to 123.
Symbolic Mode
This mode allows you to enter special
characters.
nNote
You can select a different T9 language from the
menu option. The default setting on the phone is
T9 disabled mode.
Changing the Text Input Mode
Change the text input mode by pressing .
You can check the current text input mode in
the upper right corner of the screen.
Using the T9 Mode
The T9 predictive text input mode allows you
to enter words easily with a minimum number
of key presses. As you press each key, the
phone begins to display the characters that it
thinks you are typing based on a built-in
dictionary. As new letters are added, the word
changes to reflect the most likely candidate
from the dictionary.
1. When you are in the T9 predictive text input
mode, start entering a word by pressing
keys to . Press one key per letter.
]The word changes as letters are typed -
ignore what’s on the screen until the
word is typed completely.
]If the word is still incorrect after typing
completely, press the [Star] key
once or more to cycle through the other
word options.
]If the desired word is missing from the
word choices list, add it by using the ABC
mode.
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