Zte ZTE-U X720 User manual

WCDMA Digital Mobile Phone
User Manual
The manual is applicable for ZTE-U X720 mobile phone.

Copyright ©2011 by ZTE Corporation
All rights reserved.
No part of this publication may be quoted, reproduced, translated or used
in any form or by any means, electronic or mechanical, including
photocopying and microfilm, without the prior written permission of ZTE
Corporation.
The Bluetooth®trademark and logos are owned by the Bluetooth SIG, Inc.
and any use of such trademarks by ZTE Corporation is under license.
Other trademarks and trade names are the property of their respective
owners.
ZTE Corporation reserves the right to make modifications on print errors or
updatespecifications in this manual without prior notice.
Version 1.0 in Aug. 2011

Contents
Before Use...............................................................................................................1
Safety Instructions................................................................................................ 1
Precautions for using the mobile phone........................................................ 2
Precautions for using the battery..................................................................5
Precautions for using the charger.................................................................7
Parts Definition.....................................................................................................9
Note: .................................................................................................................. 10
Insert and Remove SIM Card............................................................................. 11
Insert and Remove Memory Card ...................................................................... 12
Battery................................................................................................................13
Install the battery........................................................................................13
Remove the battery....................................................................................13
Charge the battery...................................................................................... 14
Power On/Off ..................................................................................................... 15
Menu Tree..............................................................................................................16

Descriptions of common functions..................................................................... 17
Make and receive calls....................................................................................... 17
Make a Voice call ....................................................................................... 17
Make a Video call....................................................................................... 17
Dial extension............................................................................................. 18
Dial international calls ................................................................................ 18
Receive a call............................................................................................. 18
Adjust the volume....................................................................................... 18
Hands-free ................................................................................................. 19
Call options ................................................................................................ 19
Write messages ................................................................................................. 19
View messages.................................................................................................. 20
Add new entry.................................................................................................... 20
Send and receive Email ..................................................................................... 21
Use the phone as a U disk................................................................................. 22
Main Function list................................................................................................. 23
Input Methods....................................................................................................... 31

Appendix ............................................................................................................... 32
Clearance and Maintenance...............................................................................32
health and safety................................................................................................34
Regulaciones FCC............................................................................................. 36
declaration of RoHS compliance ........................................................................40
disposal of your old phone .................................................................................41
Failure Analysis.................................................................................................. 42

Before Use
1
Before Use
Thank you for choosing ZTE-U X720 WCDMA/GSM Dual-Mode Digital
Mobile Phone (referred to as the “mobile phone” in this manual).
To guarantee your mobile phone is always in its best condition, please read
this manual carefully and keep it for future reference.
The pictures in this user manual are only used to demonstrate the mobile
phone’s functions, so they may be different from what you see on your
mobile phone.
Safety Instructions
If your mobile phone is lost or stolen, notify your service provider
immediately to prevent others from abusing it. To protect your mobile
phone against abuse, take the following precautions:
Set a PIN code and modify it from time to time.
Keep your mobile phone with you at all times.

Before Use
2
Precautions for using the mobile phone
on the road
Using a phone while driving is illegal in many countries. Please follow
local laws and drive safely at all times.
near sensitive electronics
Don’t use your phone near sensitive electronic equipment – particularly
medical devices such as pacemakers – as it could cause them to
malfunction. It can also interfere with the operation of fire detectors and
other automatic-control equipment.
For more information about how your phone affects pacemakers or
other electronic equipment, please contact the manufacturer or your
local distributor.
Your phone may cause interference when used near TVs, radios or
automated office equipment.
while flying

Before Use
3
Your phone can cause interference with aircraft equipment. So it’s
essential you follow airline regulations. And if airline personnel ask you
to switch off your phone, or disable its wireless functions, please do as
they say.
in hospital
Your phone may interfere with the normal operation of medical
equipment. Follow all hospital regulations and turn it off when you’re
asked to by posted warnings or medical staff.
at a petrol station
Don’t use your phone at petrol stations. In fact, it’s always best to switch
off whenever you’re near fuels, chemicals or explosives.
around water
Keep your phone away from water (or any other liquid). It’s not a
waterproof model.
making repairs
Never take your phone apart. Please leave that to the professionals.

Before Use
4
Unauthorised repairs could break the terms of your warranty.
broken antenna
Don’t use your phone if the antenna is damaged, as it could cause
injury.
around children
Keep your mobile out of children’s reach. It should never be used as a
toy and it might not be good for their health.
original accessories
Only use the original accessories supplied with your phone or those
approved by the manufacturer. Using unapproved accessories may
affect performance, make the warranty void, break national regulations
on the use of mobile phones, or even cause injury.
near explosives
Turn off your phone in or near areas where explosive materials are

Before Use
5
used. Always obey local laws and turn off your phone when requested.
emergency calls
To make an emergency call your phone must be turned on and in an
area where there’s network coverage. Dial the national emergency
number and press ‘send’. Explain exactly where you are and don’t hang
up until help has arrived.
working temperature
The working temperature for the phone is between 0 and 40 .℃℃
Please don’t use the phone outside the range. Using the phone under
too high or too low temperature might cause problems.
At very high volume, prolonged listening to a mobile phone can
damage your hearing.
Precautions for using the battery
Put the battery in a cool and ventilated place where there is no direct
sunshine.

Before Use
6
The battery life is usually limited, and it becomes shorter and shorter
after the battery is charged over and over again. If the charging fails
several times, this indicates that the battery is worn out and the
replacement is advised.
Dispose the worn-out batteries in designated places according to
specified regulations rather than throw them into residential garbage.
Do not throw the worn-out batteries into fire because this might cause
fire or explosion.
Do not press with great force when installing the battery because this
may result in leakage, overheating, explosion or fire.
Do not disassemble or reassemble the battery because this may result
in leakage, overheating, explosion or fire.
If the battery becomes hot, changes in color or gets deformed during
the course of use, charging or storage, please immediately stop using
and replace it.
Keep the battery away from dampness to prevent overheating,
smoldering or erosion.
Do not leave the battery in direct sunshine, around a car or
high-temperature place because this might result in leakage or

Before Use
7
overheating. This might affect the battery’s performance and shorten its
life.
Do not keep charging the battery continuously over 24 hours.
Note:
If the battery is damaged, please avoid contacting the materials
in it. If your skin has contacted those materials, flush your skin
with lots of water and seek for help from doctors if necessary.
Precautions for using the charger
Use the power voltage between 100VAC and 240VAC. Using the
voltage beyond the range may cause leakage, fire or damage to the
phone and charger.
Do not short-circuit the charger because this might cause electric shock,
smoldering or damage.
Do not charge the battery in direct sunshine, near dampness, dust,
vibration, TV set, or radio (may affect the image, sound), etc.
Do not use the charger if the power cable is damaged because this

Before Use
8
might cause fire or electric shock.
Do not place water containers near the charger to avoid water splashing.
If water or any other kind of liquid splashes on the charger, immediately
remove the charger from the power socket to avoid overheating, fire,
electric shock or failure.
Do not disassemble or reassemble the charger because this might
cause body injury, electric shock, fire or damage.
Do not touch any charger, power cable or power socket with wet hands
to avoid electric shock.
Do not place heavy objects onto power cables or refit power cable
because this might cause electric shock or fire.
Remove power plug from the socket before cleaning and maintenance.
Hold the charger rather than pull the power cable while removing the
plug from the socket because this might cause damage, electric shock
or fire.

Before Use
9
Parts Definition
End ke
y
Camera
USB port
Side keys
Adjust the
volume
Receive
r
Screen
Power ke
y
OK key
Send ke
y

Before Use
10
Note:
In this user manual, “press” means pressing the key and then
releasing; “hold” means pressing and holding the key for about
2 seconds or more.
Onscreen icons
Icons Descriptions Icons Descriptions
Show the phone’s network
signal strength. Indicate the battery capacity.
The Bluetooth is active. You have unread text
messages.
You have missed calls. You have unread multimedia
messages.
You have set call forwarding. 3G network in use.
The alert type is set to Ring. The alert type is set to Vibrate.
The alert type is set to Vibrate
and ring. A clock alarm is active.
Insert the headset.

Before Use
11
Insert and Remove SIM Card
Insert a valid SIM card into your mobile phone before use. All information
regarding network connection and SIM phone book is saved in SIM card.
In order to avoid the loss and damage of information saved in SIM card,
please don’t touch the metal surface and put SIM card far away from
electricity or magnetism.
1. Turn off your mobile phone, remove the battery and disconnect the
external power.
2. Insert SIM card into the socket.
Turn off your mobile phone and remove the battery before taking out
SIM card.

Before Use
12
Insert and Remove Memory Card
Note:
Please do not take out the memory card when performing the
relevant operation on the card. Taking out the card might not
only damage your card and mobile phone, but destroy the data
saved in the card.(The Memory Card not included in the
package.)
1. Turn off your mobile phone, remove the
battery and disconnect the external power.
2. Insert memory card into the socket.

Before Use
13
Battery
Install the battery
1. Align the battery's contact points
in the direction of the arrow as
shown, and Insert the battery
into the slot.
2. Put on the battery cover, and
push forward in the direction of
the arrow as shown until it’s
locked.
Remove the battery
1. Turn off the mobile phone.
2. Push the battery cover in the direction of
the arrow as shown and open the cover.
3. Pull the battery in the direction of the
arrow as shown and take out the battery.

Before Use
14
Charge the battery
The accompanying Li battery can be used after being
unpacked. To make the battery always in its best condition,
please exhaust the capacity of the battery and then fully
recharge it for the first three times.
1. Connect the charger with the mobile phone through
the charging interface, and insert the charger to
110V/220V power socket.
2. When the phone is powered on, the capacity indicator on up-right
corner of the screen keeps scrolling during charging; when the phone is
powered off, there’ll be charging indication on the screen during
charging. If the phone is used excessively without enough capability,
the charging indicator will not immediately appear on the screen of the
phone when charging starts, and the phone might not be powered on
within a few minutes.
3. When the phone is on, the battery is fully charged as the capacity
indicator on the up-right corner of the screen is full and doesn’t flicker
any longer. When the phone is off, the battery is fully charged as there
is fully charging indication. During the charging, the phone and charger
may normally become hot.
4. Please disconnect the charger from your mobile phone and the socket