AT&T Z431 - Manual (Page 34)

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
working
Your 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.