AT&T Z432 User Guide

53
Care and Maintenance
•   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.
•...

 
•   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...

55
Care and Maintenance
•   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...

 
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.
Road...

57
Care and Maintenance
•   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...

 
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...

59
Care and Maintenance
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...

Troubleshooting and FAQs
ProblemPossible 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...

61
Troubleshooting and FAQs
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...

 
62Troubleshooting and FAQs
ProblemPossible Causes Possible Solution
Phone will not 
turn on Battery is depleted.
Charge the battery.
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...