Zte Axon User Manual page 82

2. Select one of the following options. Consult your
teletypewriter manufacturer's manual if necessary.
TTY Off: Users who can hear and talk can disable TTY
support.
TTY Full: Users who cannot talk or hear may use this
mode to send and receive text messages through TTY
device.
TTY HCO: Users who can hear, but cannot talk, may use
this mode to listen to conversation of the other party, and
respond via text messages.
TTY VCO: Users who can talk, but cannot hear, may use
this mode to talk through the phone and receive
responses via text messages.
Set Hearing Aids
When you enable hearing aid compatibility and use a hearing aid
with a telecoil to answer the phone, it will help you hear more
clearly during the phone call. To do so:
1. Touch the Home key >
Settings > Call settings.
2. Check Hearing aids to turn on hearing aid compatibility.
CAUTION:
Do not turn on the Hearing aids option 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.
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