An adapter connects the iphone to a tty device. If you have hearing or speech difficulties you can communicate by telephone using teletype tty or real time text rtt protocols that transmit text as you type and allow the recipient to read the message right away.

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How to use tty mode on an iphone.

Whats tty on iphone. Tap the settings app. You ll need to specify a relay number and alter a few other settings after enabling this feature. Set up and use rtt and tty on iphone.

As one participant types a remark it appears on the tty device of the recipient who can then type a response. The tty feature helps hearing impaired people hold phone conversations. Rtt is a more advanced protocol that transmits audio as you type text.

Make sure that the tty setting on the phone is turned on. Teletype tty machines are used by people who are deaf or hard of hearing to communicate by typing and reading text. Tap accessibility from the general menu.

Slide the software tty button to the on position to enable iphone software tty. Tty devices can be used both on landlines and on cell phones analog or digital. Software tty is available starting with ios 10 and allows you to make text telephone calls without having a tty machine.

Exit to the home screen. Think of it as a phone call that is conducted by text. Tap general from the settings menu.

Select if you will use the built in software tty or if you will attach an external device through hardware tty. You can use the iphone with standard tty devices by plugging a cable from the tty device to an optional 19 iphone tty adapter and then plugging the adapter into the iphone. About the tty symbol in the status bar on your iphone learn how to identify the teletype tty symbol in the status bar on your iphone.