How to Turn Off TTY on the iPhone

By Peter Craddick

Turning off the iPhone's TTY feature is easy and can be accomplished by completing a few simple steps.

If you see the TTY icon, which looks like a telephone receiver over a series of white dots , on the status bar at the top of your iPhone, the TTY feature is turned on. This feature, which is designed so hearing-impaired and speech-impaired people can conduct phone calls, can be turned off in the iPhone Settings.

Step 1

Choose the Settings icon.

Tap on the Settings icon on the home screen.

Step 2

Select the Phone settings.

Scroll down the Settings screen and tap Phone.

Step 3

Slide the TTY button to the left to turn it off.

Find the TTY button and slide it to the Off Position.

About TTY

TTY stands forteletype. A separate TTY device -- which typically incorporates a keyboard and a screen -- is connected to the phones on both ends of a call for the parties to communicate. A TTY call differs from text messaging in that it is designed to be interactive back-and-forth communication just like a regular voice call. As one participant types a remark, it appears on the TTY device of the recipient, who can then type a response. Think of it as a phone call that is conducted by text.

TTY devices can be used both on landlines and on cell phones -- analog or digital. An adapter connects the iPhone to a TTY device.