Zte Z965 User Manual page 89

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.
Setting Hearing Aids
Your phone supports HAC (Hearing Aid Compatibility) function.
When you turn on the 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.
1. Press the Home Key >
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.
Enabling VoLTE
You can use LTE services to improve call quality.
1. Press the Home Key >
2. Tap Enhanced LTE Services to turn the feature on or off.
> > Settings > Accessibility.
> Settings > More.
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