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.
![The TTY icon resembles a phone receiver.](https://img.techwallacdn.com/375/ppds/264c0d46-6b43-44ef-ae88-69a7234f6403.png)
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Step 1
![Choose the Settings icon.](https://img.techwallacdn.com/375/ppds/2ab83bdc-be9c-4735-87d3-d482864f8a32.png)
Tap on the Settings icon on the home screen.
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Step 2
![Select the Phone settings.](https://img.techwallacdn.com/375/ppds/521cad19-4db2-4f8e-a5f9-8517fd66017c.png)
Scroll down the Settings screen and tap Phone.
Step 3
![Slide the TTY button to the left to turn it off.](https://img.techwallacdn.com/375/ppds/8568f8ca-8031-4c32-a58c-c6244810604d.png)
Find the TTY button and slide it to the Off Position.
About TTY
TTY stands for <ahref="http: 2009="" fatwalr.us="" 09="" tty-iphone-icon="" "=""> </ahref="http:>teletype. 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.