What Is RTT Calling and How to Enable It?

Jul. 3, 2024



People with hearing loss or speech impairment often face issues when answering phone calls. While there is always the option to text your family and friends, it isn’t as seamless as calling and doesn’t work for most Government offices and emergency services. This is where the RTT mode comes to the rescue. So what is RTT calling, and how can you use it on your phone? We’ll explain all of it below.

What is RTT Calling?

What is RTT Calling?

RTT stands for Real Time Texting. This is an accessibility feature on your phone that lets you send messages over a phone call instantly. It is different from texting on WhatsApp or iMessage, since there is no need to press “Send”. The message forms up in front of you as it is typed by the other person.

Once they stop texting, you can start typing your response. This might sound similar to the TTY mode, however, it does not require any specialized hardware and both parties have to respond to each other via text. However, in order to work, your device and network carrier needs to support this feature.

Much like TTY, the RTT calling option isn’t enabled by default on your handset. Instead, it has to be turned on from your device’s accessibility settings. If you wish to use this service, here is how you can enable RTT on Android or iPhone.

On Android

On iPhone

As mentioned, RTT shows messages in real time as you type them. If you don’t want to show the text as you type it, then turn off theSend Immediatelytoggle.

Now that you have enabled the feature on your smartphone, you can go ahead and make an RTT call on your phone. Let us take a look at how you can do it.

On Android

If the recipient has a phone that supports TTY and RTT, then they will be notified of the RTT call. Once you join it, both of you will be able to text each other in real time.

On iPhone

This wraps up this guide on RTT calling. This feature is extremely useful for people with disabilities. However, it is restrained by the service provider and the need for supported hardware. It is only available in limited regions. This is why it isn’t talked much about. Plus, we already have messaging apps where you can quickly communicate with your loved ones with ease.

If you have any doubts about this feature or have any other thoughts related to it, then let us know in the comments section.

RTT calling requires an LTE or Wi-Fi network to work properly. So you won’t find it in phones still running on a 3G network. Your network providers also need to support it.

In RTT (Real-Time Text), you see the message being typed out in real time instead of the messaging apps where you only see the “Typing” indicator but cannot tell what the other person is typing.

To disable the feature, go to Settings > Accessibility. If you are on iPhone, then tap on RTT/TTY and turn off the toggle for RTT/TTY. Android users select the Not Visible option for RTT calling.

As a tech journalist, I dive into the ever-evolving tech landscape with a particular interest for smartphones, apps, and gaming. With a passion for sharing insights, my articles blend expertise with a friendly touch—think of me as your friendly neighborhood tech support.