Noise Reduction; Increase Volume In Pocket; Tty Mode - Samsung Galaxy S4 User Manual

Noise reduction

This option allows you to suppress background noise during
a call.
From the main Call settings page, tap Noise reduction
to create a check mark and enable the feature.

Increase volume in pocket

This option increases the ringtone volume when the device is
in a pocket or a bag. It uses the proximity sensor to detect its
location.
From the main Call settings page, tap Increase volume
in pocket to create a check mark and enable the
feature.
Voicemail
You can view your voicemail number from this menu.
1. From the main Call settings page, tap Voicemail service.
2. If an additional voicemail service is in use (other than
carrier), tap Voice settings to now view your selected
voicemail number and information.
Sound - Voicemail Ringtone
This option allows you to assign your default voicemail
notification tone.
1. From the main Call settings page, tap Sound.
2. Select a voicemail notification tone and tap OK.
Vibrate
This option allows you to activate a vibration for an incoming
voicemail.
From the main Call settings page, tap Vibrate field to
toggle the feature on or off.

TTY Mode

A TTY (also known as a TDD or Text Telephone) is a
telecommunications device that allows people who are deaf,
hard of hearing, or who have speech or language disabilities,
to communicate by telephone.
Your device is compatible with select TTY devices. Please
check with the manufacturer of your TTY device to ensure
that it is compatible with digital cell phones.
Changing Your Settings 280