What's RTT on iPhone: A Comprehensive Guide for Users

What’s RTT on iPhone: A Comprehensive Guide for Users


The Real-Time Text (RTT) feature on an iPhone is a useful tool that allows users to have text conversations in real-time, without the need for voice calls. It is especially beneficial for individuals who are deaf, hard of hearing, or have difficulty speaking. In this comprehensive guide, we will explore what RTT is, how to activate it on your iPhone, and how to make the most out of this feature.

What is RTT?

RTT is a technology that enables users to exchange text messages instantly, similar to a chat or instant messaging service. It eliminates the need for voice calls, making communication easier for individuals who rely on text-based conversations. RTT works by converting typed text into real-time text, allowing for seamless communication with other RTT-enabled devices.

Activating RTT on iPhone

To activate the RTT feature on your iPhone, follow these simple steps:

1. Open the Settings app on your iPhone.
2. Scroll down and tap on “Accessibility.”
3. Tap on “RTT/TTY” from the list of accessibility options.
4. Toggle the switch to enable RTT.
5. You can also customize additional settings for RTT, such as the font size and keyboard behavior, by tapping on “RTT/TTY Settings.”

Using RTT on iPhone

Once you have activated RTT on your iPhone, you can start using it to communicate with other RTT-enabled devices. Here’s how:

1. Open the Phone app on your iPhone.
2. Dial the phone number of the person you want to communicate with.
3. After the call is connected, tap on the “RTT” button that appears on the call screen.
4. A text box will appear, allowing you to type your messages in real-time.
5. The conversation will display both your messages and the other person’s responses in the text box.
6. You can continue the conversation by typing your messages and tapping the “Send” button.

Benefits of RTT

RTT offers several benefits for iPhone users. Some of the key advantages include:

1. Accessibility: RTT enables individuals who are deaf, hard of hearing, or have difficulty speaking to communicate effortlessly using text.
2. Simplicity: The real-time text format is familiar to most users, making it easy to adapt to and use for communication.
3. Speed: RTT allows for quick and instant exchange of messages, eliminating the time-consuming process of writing, sending, and waiting for responses via traditional text messaging or emails.

Troubleshooting RTT on iPhone

If you encounter any issues while using RTT on your iPhone, here are a few troubleshooting tips:

1. Check your internet connection: RTT requires a stable internet connection to work properly. Ensure that you are connected to a reliable Wi-Fi or cellular network.
2. Update your iPhone: Keeping your iPhone’s software up to date ensures that you have the latest bug fixes and enhancements, which can improve the performance of RTT.
3. Restart your iPhone: Sometimes, a simple restart can resolve minor software glitches that may be affecting the functionality of RTT.
4. Contact Apple support: If the problem persists, reach out to Apple support for further assistance and guidance.


RTT is a valuable feature on the iPhone that provides a convenient way for individuals with specific communication needs to engage in real-time text conversations. By activating RTT on your iPhone and following the steps outlined in this comprehensive guide, you can make the most out of this powerful feature and enhance your communication experience. Enjoy seamless and convenient text-based conversations with RTT on your iPhone!


1. What is RTT on iPhone and what does it stand for?

RTT on iPhone stands for Real-Time Text, which is a feature that enables text-based communication during phone calls.

2. How do I enable RTT on my iPhone?

To enable RTT on iPhone, go to Settings > General > Accessibility > RTT/TTY and toggle the “RTT/TTY” switch to on.

3. Can I use RTT on iPhone with any cellular carrier?

Yes, RTT on iPhone is compatible with most major cellular carriers.

4. What are the advantages of using RTT on iPhone?

The advantages of using RTT on iPhone include real-time text communication, which can be particularly useful for individuals with hearing or speech disabilities.

5. Is RTT available internationally on iPhone?

Yes, RTT is available for use internationally on iPhone.

6. Can I use RTT on iPhone for emergency calls?

Yes, RTT can be used for emergency calls on iPhone, providing an additional method of communication in emergency situations.

7. How can I initiate an RTT call on iPhone?

To initiate an RTT call on iPhone, open the Phone app, select a contact, and tap the “RTT” button to start the RTT session.

8. Can I receive RTT calls on my iPhone?

Yes, you can receive RTT calls on your iPhone. When an incoming call is received, the device will display an RTT button that can be tapped to start the RTT session.

9. Can I use RTT on iPhone with other devices or platforms?

RTT on iPhone is primarily designed for use with other RTT-capable devices or platforms. However, some carriers and services may support RTT-to-TTY compatibility.

10. How do I end an RTT call on my iPhone?

To end an RTT call on iPhone, simply tap the “End Call” button or hang up the phone as you would with a regular phone call.