AT&T Z431 User Guide

							 
•  
When disposing of a battery, be sure it is nonconducting by applying vinyl tape to 
the (+) and (-) terminals.
•    Do not attempt to disassemble or modify the battery.
•   
Do not drop or throw the handset.
•   
Do not subject the handset to harsh treatment.
•   
Stop using the battery if you notice it becoming abnormally hot, or if you notice 
any odor, discoloration, deformation, or anything abnormal occurring when 
using the phone, charging the battery, or when the phone and/or battery are idle.
•    In the unlikely event of a battery leak, keep the battery discharge away from your 
eyes and skin. If the leakage does come into contact with your eyes or skin, flush 
thoroughly with clean water and seek immediate medical attention.
•    Do not use a damaged or deformed battery.
•   
Do not solder a battery.
•   
When a battery has reached the end of its usable life cycle, immediately remove 
it from any equipment.
•    The earpiece may become warm during normal use. Also, the handset may 
become warm while the battery is being charged.
•    When a handset is in vibration mode, the vibration can sometimes cause the 
handset to move.
•    Be careful not to place the handset near heat sources (such as a heater) or too 
close to the edge of a table.
•    Use a damp or anti-static cloth to clean the handset. Do not use an ordinary dry 
cloth or electrostatic cloth. Do not use chemical or abrasive cleaners as these 
could damage the casing.
•    The use of third-party equipment, cables, or accessories not made or 
authorized by the manufacturer may invalidate the warranty of your handset 
and may damage the handset.
54 Care and Maintenance
•   Remember to make backup copies of all important data stored on your handset.
•   
The cardboard packing supplied with this handset is recyclable.
Caution: There is a risk of explosion if the battery is replaced with an incorrect 
type. Dispose of used batteries according to the instructions.
General Guidelines
•    Unauthorized duplication of copyrighted material is prohibited by law in 
most countries. Please check the laws in your country concerning the use of 
copyrighted material.
•    Many jurisdictions have laws and regulations restricting or prohibiting the use 
of camera and video equipment in public or private areas. Some jurisdictions 
restrict or prohibit the distribution, display, processing, and general use of 
photographs or videos based on where they were captured. Users are strongly 
encouraged to obey all laws and to respect the personal rights of others.
•    Please check with your service provider regarding roaming surcharges and 
network availability. Coverage may not be available in some areas.
•    The use of mobile phones is not allowed in some areas, such as hospitals, 
research centers, and airplanes. The user is ultimately responsible for making 
sure that the device is completely powered off. If there is any uncertainty about 
this, remove the battery from the handset.
•    Observe any signs that indicate a prohibition or restriction of mobile phone use 
(such as those near gas stations or explosives) and when indicated, power off 
the handset or device immediately.
•    If you have a heart condition, consult your physician before using a mobile 
phone.
•    Keep the handset, charger, and batteries away from children.
•   
Do not use the handset where blasting is in progress.
 
55
Care and Maintenance 
						

							 
•  
Do not try to make a call while the temperature of the battery is above 113°F 
(45°C).
•    Take care not to put your handset in your back pocket and then sit on it. Also, 
do not put your phone at the bottom of a bag where it may be subjected to 
excessive weight or pressure. Doing so may damage the LCD and camera lens.
•    The operation of some medical electronic devices, such as hearing aids and 
pacemakers, may be affected if a handset is used in close proximity with them. 
Observe any warnings and recommendations from the manufacturer of any 
such device.
•    Do not leave the handset discharged or without a battery for a long time; 
otherwise, data may be erased.
•    Your phone contains metal; individuals with certain conditions have been known 
to develop an itch, rash, or eczema from exposure to certain metals.
CTIA Requirements
•   Do not disassemble or open, crush, bend or deform, puncture or shred.
•   
Do not modify or remanufacture, attempt to insert foreign objects into the 
battery, immerse or expose to water or other liquids, expose to fire, explosion, or 
other hazards.
•    Only use the battery in the system for which it is specified.
•   
Do not short-circuit a battery or allow metallic conductive objects to contact 
battery terminals.
•    Replace the battery only with another battery that has been approved for the 
device per this standard: IEEE-Std-1725-2006. Use of an unapproved battery 
may present the risk of fire, explosion, leakage, or other hazard.
•    Promptly dispose of used batteries in accordance with local regulations.
56 Care and Maintenance
•  
Battery usage by children should be supervised.
•   
Avoid dropping the phone or battery. If the device or battery is dropped, 
especially on a hard surface, take it to a service center for inspection.
•    Improper battery use may result in a fire, explosion, or other hazard.
•   
For devices that utilize a USB port as a charging source, the device’s user manual 
shall include a statement to the effect that the phone shall only be connected 
to CTIA certified adapters, products that bear the USB-IF logo, or products that 
have completed the USB-IF compliance program.
Aircraft Safety
•   When traveling by air, power off your phone prior to takeoff.
•   
Obey all posted signs and crew instructions regarding the use of mobile phones 
on the aircraft.
•    Be sure to check the alarm settings to ensure that the phone will not 
automatically power on during the flight.
Hospital Safety
•   Switch off your phone and remove the battery in areas where the use of mobile 
phones is prohibited.
•    Follow all instructions regarding the use of handsets in a medical facility.
 
57
Care and Maintenance 
						

							 
Road Safety
•  
You must exercise proper control of your vehicle at all times. Give your full 
attention to driving.
•    Pull over to the side of the road and park before making or answering a call, if 
driving conditions require it.
•    Obey all local laws regarding the use of handsets while driving.
•   
Do not stop on the hard shoulder of a highway to answer or make a call, except in 
an emergency.
•    Switch off your handset at a gas station, even if you are not refueling your car.
•   
Do not store or carry flammable or explosive materials near the handset.
•   
Electronic vehicle systems, such as anti-lock brakes, speed (cruise) control, and 
fuel injection systems are not normally affected by radio transmissions. Observe 
all warnings from your vehicle’s manufacturer regarding the use of mobile 
phones and possible interference. If you observe your vehicle functioning 
incorrectly and suspect that it may be related to interference from the handset, 
do not switch on the handset in or near the vehicle until the vehicle has been 
checked by a qualified service technician.
Vehicles Equipped with Airbags
An airbag inflates quickly and with great force. Do not place any objects, including 
installed or portable wireless equipment, in the area above the airbag or in the 
airbag deployment area. If in-vehicle wireless equipment is improperly installed 
and the airbag inflates, serious injury or death could result.
58 Care and Maintenance
Declaration of Conformity
We declare under our sole responsibility that the product(s) detailed in this manual, 
and in combination with our accessories, conform to the essential requirements 
of European Union Directive 1999/5/EC Radio and Telecommunications Terminal 
Equipment Directive requirements 3.1(a), 3.1(b), 3.2.
Disposing of Your Phone
The  symbol on the equipment indicates that it must be collected separately 
from regular trash.
Contact your local authorities for more information about approved disposal 
methods, or take it to a local electronics retailer for proper disposal or recyclings.
Emergency Service
Note: Emergency service numbers vary by country.
To make an emergency call in any country:
    Ensure that your handset is turned on and in service.
   Press  the  End Key as many times as needed to return to the home screen.
   Enter the local emergency number for your current location (for example, 911).
   Press  the  Send Key to dial the number. Follow the instructions you receive and 
do not end the call until told to do so.
When the SIM card is not inserted or when the Phone Lock function is activated 
and you do not know the password, press the Left Soft Key for SOS and enter the 
emergency number for your location. Press the Send Key to dial the number.
 
59
Care and Maintenance 
						

							 
Notes:
•   Tell the operator which service you require: Police, Fire, or Ambulance. Tell them 
where you are and remain stationary to maintain contact if possible.
•    Due to the nature of the cellular system, emergency calls cannot be guaranteed. 
You should never rely solely on any wireless device in emergency situations.
HAC Mode
When HAC mode is active, your phone sends the audio signals from your phone 
to the telecoil rather than to the microphone of your hearing aid. The HAC setting 
only improves the quality of sound transmitted through the earpiece; it does not 
affect the speakerphone or a headset.
•   It is recommended that you disable Bluetooth functionality when HAC mode is 
in use.
•    HAC mode consumes additional battery power. Pay close attention to the 
battery’s charge level when using HAC mode. 
Caution: Do not turn on the HAC setting unless you use a hearing aid with a 
telecoil. Using this setting without a hearing aid or with a hearing aid \
without a 
telecoil may be harmful to your hearing.
60 Care and Maintenance 61
Troubleshooting and FAQs
Troubleshooting and FAQs
Problem Possible Causes Possible Solution
Poor reception The network signal is too weak 
at your current location, for 
example, in a basement or 
near a tall building. Move to a location where the 
network signal can be properly 
received.
The network is busy or 
overloaded.Wait a few minutes and try 
your call again.
Echo or noise 
on the line
Poor connection.  End the call and dial again.
Certain phone 
features not 
workingYour service provider may not 
support some of the features 
on your phone (e.g. Call 
Waiting or Call Forwarding). 1.   
Contact your service 
provider to determine if 
they support the features 
that are not working.
2.    If your service provider 
supports the feature and it 
still does not work, take the 
phone to a service center 
for assistance.
Consult the following table for resolutions to common problems. If your particular 
problem cannot be resolved using the information in the table, take your phone to 
an authorized dealer or service center for assistance. 
						

							62Troubleshooting and FAQs
 
63
Troubleshooting and FAQs
Problem Possible Causes Possible Solution
SIM card error 
SIM card is damaged or 
defective.Take the SIM card to a service 
center for testing.
SIM card inserted improperly. Check to ensure that the 
SIM card is facing the right 
direction and that it is fully 
inserted into the slot.
Dirt or debris on the SIM card 
contacts.
Use a soft, dry cloth to clean 
the SIM card contacts.
PIN code is 
blocked You have entered an incorrect 
PIN code ten consecutive 
times. If you have the SIM card’s  
PUK code, use the PUK code 
to unlock the SIM card.
If you do not have the PUK 
code, contact your service 
provider.
Unable to enter 
information 
into the 
Address Book The Address Book’s memory 
is already full.
Delete unneeded data from 
the Address Book.
Problem
Possible Causes Possible Solution
Battery will  
not charge The battery or battery charger 
is damaged. Contact the dealer where you 
purchased the equipment.
The phone’s temperature is 
below 32°F (0°C) or higher 
than 113°F (45°C). 1.   
Move the battery to an 
environment where the 
temperature is within 
operating range.
2.    Allow time for the battery’s 
temperature to return to 
normal before attempting 
to charge again.
Poor contact between the 
battery and charger.Check and clean all 
connectors to ensure good 
contact.
Unusually 
short battery 
life
Certain phone functions 
consume additional battery 
power, such as Bluetooth and 
HAC mode.Disable Bluetooth and/or HAC 
mode if you are not using 
these functions.
Weak network signal.Turn off the phone until you 
reach an area with a strong 
network signal.
Phone will not 
turn on Battery is depleted.
Charge the battery. 
						

							Specifications
64Specifications
Note: Talk time and idle time are based on ideal working environments. Use of 
certain phone functions and network conditions can reduce battery life and talk/
idle time. This mobile phone complies with part 15 of the FCC Rules. Operation is subject to 
the following two conditions: 
   
This device may not cause harmful interference, and 
   This device must accept any interference received, including interference that 
may cause undesired operation.
This device 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 to radio 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 to 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.
•   
Changes or modifications not expressly approved by the party responsible for 
compliance could void the user’s authority to operate the equipment.
•    The antenna(s) used for this transmitter must not be co-located or operating in 
conjunction with any other antenna or transmitter.
FCC Compliance
65
FCC Compliance
Handset Standards WCDMA: 850 MHz, 1900 MHz, and 2100 MHz
GSM: 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz
Dimensions 
(H×W×D) 4.49" (H) x 2.4" (W) x 0.41" (D)
Weight 3.34 oz. (with battery)
Display 2.4" 262K TFT color screen
Camera 2.0 megapixels, supports images up to 1600 x 1200 pixels
Video captureUp to 15fps (QVGA)
Extended memory 32 GB microSD card
Battery 1,000 mAh, Lithium-Ion (Li-Ion)
Features MMS Video and Picture, Email, Calendar, Speakerphone, 
Voice Recorder, Bluetooth
Supported file types Image: GIF, JPEG, PNG, BMP, Animated GIF, WBMP
Video: MP4
Audio: MP3, AMR, WAV, ACC, ACC+, MIDI
Continuous idle time Up to 12 days and 12 hours
Continuous talk timeApproximately 4.5 hours
Charge timeApproximately 3 hours
MiscellaneousUSB 2.0; JAVA MIDP 2.1 
						

							Radio Frequency (RF) Energy
This model phone meets the government’s requirements for exposure to  
radio waves.
This phone is designed and manufactured not to exceed the emission limits for 
exposure to radio frequency (RF) energy set by the Federal Communications 
Commission of the U.S. Government:
The exposure standard for wireless mobile phones employs a unit of 
measurement known as the Specific Absorption Rate, or SAR. The SAR limit set 
by the FCC is 1.6W/kg.* Tests for SAR are conducted using standard operating 
positions accepted by the FCC with the phone transmitting at its highest certified 
power level in all tested frequency bands. Although the SAR is determined at the 
highest certified power level, the actual SAR level of the phone while operating 
can be well below the maximum value. This is because the phone is designed to 
operate at multiple power levels so as to use only the power required to reach the 
network. In general, the closer you are to a wireless base station antenna, the lower 
the power output.
The highest SAR value for the model phone as reported to the FCC when tested 
for use at the ear is 1.04 W/kg, and when worn on the body, as described in this 
user guide, is 1.37 W/kg (body-worn measurements differ among phone models, 
depending upon available enhancements and FCC requirements).
While there may be differences between the SAR levels of various phones and at 
various positions, they all meet the government requirement.
66Radio Frequency (RF) Energy
The FCC has granted an Equipment Authorization for this model phone with 
all reported SAR levels evaluated as in compliance with the FCC RF exposure 
guidelines. SAR information on this model phone is on file with the FCC and can  
be found under the Display Grant section of http://www.fcc.gov/oet/ea/fccid/ 
after searching on FCC ID: Q78-Z431.
For body-worn operation, this phone has been tested and meets the FCC 
RF exposure guidelines for use with an accessory that contains no metal and 
positions the handset a minimum of 0.6 inches (1.5 cm) from the body. Use 
of other enhancements may not ensure compliance with FCC RF exposure 
guidelines. If you do not use a body-worn accessory and are not holding the phone 
at the ear, position the handset a minimum of 0.6 inches (1.5 cm) from your body 
when the phone is switched on.
67
Radio Frequency (RF) Energy
* 
In the United States and Canada, the SAR limit for mobile phones used by the public 
is 1.6 watts/kg (W/kg) averaged over one gram of tissue. The standard incorporates a 
substantial margin of safety to give additional protection to the public and to account for 
any variations in measurements. 
						

							Warranty
ZTE offers you a limited warranty that the enclosed subscriber unit and its 
enclosed accessories will be free from defects in material and workmanship for a 
period that expires one year from the date of sale of the Product to you, provided 
that you are the original enduser purchaser of the Product and provided that your 
purchase was made from a supplier authorized by the Seller. Transfer or resale 
of a Product will automatically terminate warranty coverage with respect to that 
Product. This limited warranty is not transferable to any third party, including but 
not limited to any subsequent purchaser or owner of the Product. This limited 
warranty is applicable only to end users in the United States.
1.    This product or phone is warranted for 12 (twelve) months from date of 
purchase.
2.    
For warranty service information, please call ZTE service number (877) 817-1759 
(Toll Free). The manufacturer’s website, http://www.zteusa.com, is also 
available for assistance.
3.     This warranty only applies if the product has been used in accordance with the 
manufacturer’s instructions under normal use and with reasonable care.
4.   What this warranty does not cover:
  a)   Defects or damages resulting from the misuse of this product.
  b)     Defects or damages from abnormal use, abnormal conditions, improper 
storage, exposure to moisture, dampness or corrosive environments, 
unauthorized modifications, unauthorized repair, neglect, rough handling, 
abuse, accident, alteration, improper installation, incorrect voltage 
application, food or liquid spoilage, acts of God.
  c)   Normal wear and tear.
68 Warranty
 d)     If the Product has been opened, modified or repaired by anyone other than 
a warranty service center or if it is repaired using unauthorized spare parts.
  e)     If the serial number or mobile accessory date code has been removed, 
erased, defaced, altered or are illegible in any way subject to sole judgment 
of ZTE.
LIMITED WARRANTY
TO THE EXTENT PERMITTED BY APPLICABLE LAW, THIS LIMITED WARRANTY 
IS YOUR SOLE AND EXCLUSIVE REMEDY AGAINST ZTE AND ZTE’S SOLE AND 
EXCLUSIVE LIABILITY IN RESPECT OF DEFECTS IN PRODUCT. HOWEVER, THIS 
LIMITED WARRANTY SHALL NOT EXCLUDE NOR LIMIT ANY OF YOUR LEGAL 
(STATUTORY) RIGHTS UNDER THE APPLICABLE NATIONAL LAWS.
TO THE EXTENT PERMITTED BY APPLICABLE LAW ZTE DOES NOT ASSUME ANY 
LIABILITY FOR LOSS OF OR DAMAGE TO OR CORRUPTION OF DATA, FOR ANY 
LOSS OF PROFIT, LOSS OF USE OF PRODUCTS OR FUNCTIONALITY, LOSS OF 
BUSINESS, LOSS OF REVENUES OR LOSS OF ANTICIPATED PROFIT, INCREASED 
COSTS OR EXPENSES OR FOR ANY INDIRECT, OR SPECIAL OR CONSEQUENTIAL 
LOSS OR DAMAGE. TO THE EXTENT PERMITTED BY APPLICABLE LAW, ZTE’S 
LIABILITY SHALL BE LIMITED TO THE PURCHASE VALUE OF THE PRODUCT. 
THE ABOVE LIMITATIONS SHALL NOT APPLY TO DEATH OR PERSONAL INJURY 
CAUSED BY DEFECT OF PRODUCT IN MATERIAL, DESIGN AND WORKMANSHIP.
69
Warranty 
						

							 
How to Get Warranty Service
To obtain warranty service, please call (877) 817-1759. Please have the following 
information available when you send the phone in for repair:
•   A valid Proof of Purchase
•   
Return address
•   
Daytime phone number or fax number
•   
Model #
•   
IMEI # (Look for the 15-digit IMEI # behind the battery of the device.)
•   
Complete description of the problem
•   
Transportation prepaid
Other Warranty Program
You may have other warranty programs with your purchase, such as warranty 
exchange. If so, please refer to equipment package or the original point of sale.
70 Warranty
Notes
71
Notes 
						

							Notes
72Notes