Samsung Galaxy J7 V User Manual page 90

Apps
Advanced calling
Enjoy high definition voice and video calling from Verizon.
1. From Settings, tap
turn on this feature.
2. Tap either HD Voice and Video Calling or HD Voice only.
TTY mode
A teletypewriter (TTY) is a telecommunications device that allows people who are
deaf, hard of hearing, or who have speech or language disabilities to communicate by
telephone.
1. From Phone, tap
2. Tap Other call settings > TTY mode.
3. Tap TTY Off, TTY Full, TTY HCO, or TTY VCO.
Connections > Advanced calling, and then tap
More options > Settings.
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