RTT iPhone, With the help of RTT, you can send text messages during the calls. You can also use RTT with an external TTY device by connecting with the TTY adapter. Real-time texts are usually for people facing difficulty in speech and hearing. It is designed for deaf people and for those who have speech-related problems. This unique feature is present in all iPhones, from iPhone model6 to higher.

iPhone users all over the world can not enjoy this extraordinary feature. The people of the United States and Canada can enjoy this outstanding feature. Using real-time text, you can text messages at voice-like speed.
Use of RTT
RTT is a feature that is available to all iPhone users. This feature is available on iPhone for those who are deaf or can not speak. Such users need to replace their calls with RTT. Exploring RTT, those who can not hear or speak can communicate with others with real-time text.

How to use RTT
Firstly, you will typically receive a call.
You will see the “RTT call” button.
After receiving the call, click the RTT button.
After clicking the RTT, the keyboard will pop out.
Type your text message during the call, and then you will see, the messages appearing on the other side instantly.

If the “send immediately” option is off in your settings, then you have to click the send button. While if your “send immediately” option is on, you don’t need to click the send button. This will appear on the other side instantly without clicking the send option.
Enabling RTT on iPhone
To turn on the RTT on the iPhone, follow these steps.
1. Go to the setting.
2. Search for the “Accessibility” option and click on it
3. Select RTT or TTY from the different options.
4. Switch on Software RTT.
5. Choose the SIM if your iPhone has more than one SIM card.
6. Now click on the relay number, and enter the number you want to use for this service. Make calls when you are using the Software RTT.
7. Now enable all calls as RTT.
8. Now click the toggle option to send the messages as you type them.
Steps to make RTT calls on iPhone
Click on your contacts.
Now, tap on the name of the person you want to call.
Tap on the option of RTT calls or TTY calls.
Now, wait some seconds for the call connection, and click the RTT icon.
Steps to answer the RTT calls on iPhone
You can answer the RTT calls with a click
Here are the steps to attend the RTT calls on iPhone.
There is an RTT button in place of the default answer button. Click that button.
Click RTT to convert the calls into texts.
Typewritten on iPhone during RRT calls

We can also send messages during the RTT calls. If it is off, and you want to send the messages, click the arrow symbol present in the message window. Moreover, if you want to send audio messages, click the microphone icon, and start speaking.
How to test the written version of the RTT calls on iPhone?

Open the phone app. Scroll down until you find the option of RTT calls or TTY calls. Now, click the info option on the call line. Its symbol will look like “i”. Now click on the download. And then follow the remaining instructions. Turning off voice calls into RTT. Here are some easy steps to turn a simple call into RTT. There you will see the “use RTT” option. Click on that option. Wait until the microphone turns into RTT. Now with a click on RTT, the text conversation section will open. Using RTT, you can turn your simple voice call into an exciting RTT call.
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Accessibility
Every iPhone user can use RTT during the calls to make their iPhone more accessible. You can send your messages instantly to others by enabling the “send immediately” option. Then, there is no need to tap the “send” option to send your texts or messages to others. Apple also supports the real-time text feature in Apple Watch (iWatch) or Mac.

Turning off an RTT call
If you don’t want to use the RTT feature anymore, you can turn it off. Real-time text is a feature in the iPhone that we cannot remove. But you can disable it. Here are some steps to turn off the RTT on the iPhone.
Firstly open the settings on your iPhone and search for “accessibility”. There you will see the RTT or TTY option. Click on that option. There, disable the software RTT option. Now your RTT or TTY is off.
FAQs
Is it possible to remove the real-time text from your iPhone?
Real-time text is a feature already available for all iPhone users, so it is not possible to remove this feature from your device. However, you can disable or turn off this feature.
Why is RTT given on the iPhone?
RTT is a feature that we use to convert a simple voice call into a text conversation.
Is RTT only for iPhone users?
No! Real-time text is a feature that is available in iPhone as well as Android mobile phones. But this option is already available on the iPhone. For Android mobiles, you have to enable this option.
What is the purpose of the RTT?
RTT is specifically for those who can not hear or speak properly.
Is RTT only for disabled people?
Well! It is specially for those who have hearing and speaking problems, but all iPhone users can also use this feature.
Conclusion
RTT is a feature that we use to enjoy our calls with text conversation. You can disable the RTT option if you don’t want to use it. This feature is available on iPhones as well as Android phones. Moreover, RTT is carrier dependent. You can not remove this feature from your device but can turn it off.