How Does TTY Work on Cell Phones

A TTY ( Text Telephone, Teletype Terminal, TeleTYpewriter) is a device used to help deaf people interact. Numerous smart phones today have the ability to link to TTY devices, permitting hearing-impaired individuals to speak with others utilizing a TTY device. When allowing or disabling TTY mode on your phone, specific components of your phone become unusable.

What Happens If I Turn Off the TTY Mode on My Cell Phone?

About TTY

TTY devices are devices that are particularly developed to enable hearing and speech impaired people to communicate with one another over cross countries. Due to the fact that hearing- or speech-impaired individuals are unable to use telephones in the standard method, the TTY maker displays text messages. Both parties need TTY devices to interact with one another. If your cellular phone has TTY capabilities, it can be connected to a TTY device, and you can communicate with someone else who has a TTY device. Unlike text messaging, TTY language and protocol is created for instant interaction. For instance, the term “GA,” brief for “proceed,” is used at the end of a sentence, symbolizing that it’s the other person’s turn to speak.


One of the primary functions of TTY devices is the capability to link to TRS, or the Telecoms Relay Service. This service translates words into text, and text into words. Basically, this allows a non-hearing-impaired individual to speak into the telephone, and hear words being spoken back. On the other end, however, is a hearing-impaired person typing words, and seeing words being typed back to him. In the past, operators used to equate the interaction, but today, human voice recognition software is being implemented to pass on the interactions between the two parties.

How Does TTY Work on Cell Phones

Enabling TTY

You can link your mobile headset to a TTY device through the headphone jack, however you’ll first need to make it possible for TTY in your phone’s settings. While each phone is different, you can generally find the TTY choice under the “General Settings” menu. Decide to turn TTY on prior to connecting your phone to a TTY device.

Enabling TTY mode may cause you to lose the capability to receive non-TTY calls and text.

You might also be not able to open specific applications on smartphones.

How do I turn off TTY on my Phone?

Turning off TTY mode on your phone will allow you to use the typical non-TTY functions of your phone once again, such as making and receiving fundamental phone calls and text messages. Nevertheless, you will not be able to receive, or make, TTY call. If you’re anticipating a TTY telephone call, then you have to enable your TTY mode ahead of time. Besides not having the ability to receive TTY calls, there should not be other negative consequences of switching off TTY mode. Your phone should still function as typical.

Step-by-step instruction for Android OS

When TTY (teletypewriter) settings are allowed, you can use your phone with a TTY device if you’re deaf or tough of hearing.

  1. From a Home screen, tap Phone Home screen Phone icon.
    • Keep in mind If unavailable, browse: Apps > Phone.
  2. From the Keypad tab, tap the Menu icon Menu icon (located in the upper-right).
  3. Tap Settings.
  4. Tap Call.
  5. Tap More settings.
  6. Tap TTY mode.
  7. Tap among the following:
    • TTY Off
    • Disables all TTY settings
    • TTY Full
    • Makes it possible for all TTY settings
    • TTY HCO
    • Makes It Possible For HCO (Hearing Carry Over).
    • TTY VCO.
    • Allows VCO (Voice Carry Over).

Should TTY be On or Off?

It is up to you. TTY mode is tradition technology and lots of hearing or speech impaired people can use SMS to interact. There are also real-time IP innovations to make interaction easier, but these require either an information plan or a digital telephone line. TTY mode has been maintained for those who have no access to mobile information or are limited to analog phone lines. Availability marches onwards, but it’s still not rather common.