<p><img src="https://static2.businessinsider.com/image/60cbadcf20bd1300181c6fbd-1883/Hard of hearing person using phone.jpg" border="0" alt="hard of hearing person sits at train stop while texting." data-mce-source="Sladic/Getty Images" data-mce-caption="iPhone users can enable RTT through the Accessibility menu in the Settings app."></p><p></p><bi-shortcode id="summary-shortcode" data-type="summary-shortcode" class="mceNonEditable" contenteditable="false">Summary List Placement</bi-shortcode><p>Real-time text is an advanced accessibility protocol for people with speech and hearing difficulties. It transmits text and audio as you type and talk, allowing the receiver to read the message instantly. </p><p>Designed for phone users who are deaf, hard of hearing, or have speech-related impairments, but usable by anyone, it comes standard on all iPhone models 6 and higher. </p><p>RTT isn't yet supported by all carriers in every country or region, meaning availability can depend on the network and carrier being used. But if available with your service, your iPhone's RTT tool can be enabled and configured through the Accessibility menu in your phone's settings. </p><aside class="quick-tip headline-regular"><p><strong>Quick tip:</strong> When RTT or TTY is enabled, a phone-like symbol will be present at the top of your screen during calls.</p></aside><p>Once on, you can communicate with other RTT or teletypewriter (TTY) device users. </p><h2>How to enable RTT on an iPhone</h2><p><strong>1.</strong> Open your <strong>Settings</strong> app.</p><p><strong>2.</strong> Either use the Search tool or scroll until you see <strong>Accessibility</strong>. Tap on it. </p><p><img src="https://static3.businessinsider.com/image/60cba78720bd1300181c6f8d-828/RTT 1.jpg" border="0" alt="RTT 1" data-mce-source="Ennica Jacob/Insider" data-mce-caption="Select Accessibility from your iPhone's settings menu."></p><p><strong>3.</strong> Select <strong>RTT/TTY</strong> from the list of options. <br><br><img src="https://static6.businessinsider.com/image/60cba8d823393a00188e3e6a-828/RTT 2.jpg" border="0" alt="RTT is listed among the hearing accessibility options on iPhone." data-mce-source="Ennica Jacob/Insider" data-mce-caption="Tap on the RTT/TTY option under the list iPhone's hearing accessibility options."></p><p><strong>4.</strong> Turn on <strong>Software RTT/TTY</strong>.</p><p><strong>5.</strong> Choose a line if your iPhone has Dual SIM.</p><p><strong>6.</strong> Tap <strong>Relay Number</strong> then enter the number used for relay service calls when you use Software RTT/TTY.</p><p><img src="https://static1.businessinsider.com/image/60cbaab923393a00188e3e7f-828/RTT 3.jpg" border="0" alt="Toggles for the RTT tools on iPhone." data-mce-source="Ennica Jacob/Insider" data-mce-caption="Toggle on the Software RTT and Relay Number options."></p><p><strong>7.</strong> Enable <strong>Answer All Calls as RTT/TTY</strong>. Then confirm your decision to have calls automatically answered as RTT instead of voice calls. </p><p><img src="https://static6.businessinsider.com/image/60cbab3320bd1300181c6fa8-828/RTT 4.jpg" border="0" alt="Button in red on iPhone to enable All Calls as RTT" data-mce-source="Ennica Jacob/Insider" data-mce-caption="Select the answer all calls option to enable RTT on your iPhone."></p><p><strong>8.</strong> Tap the toggle for <strong>Send Immediately</strong> to turn on sending characters as you type them. </p><h2>How to start an RTT/TTY call on an iPhone</h2><p><strong>1.</strong> In the <strong>Phone</strong> app, tap the number of the contact you wish to call.</p><p><strong>2.</strong> Tap <strong>RTT/TTY Call</strong> or <strong>RTT/TTY Relay Call</strong> when prompted.<br><br><img src="https://static5.businessinsider.com/image/60cbafef23393a00188e3e9e-750/RTT 6.jpg" border="0" alt="The TTY call button on iPhone surrounded by a red box." data-mce-source="Abbey White/Insider" data-mce-caption="Tap RTT/TTY call to begin your conversation."></p><p><strong>3.</strong> Once the call connects, tap <strong>Use RTT</strong> in the bottom right corner.</p><aside class="quick-tip headline-regular"><p><strong>Quick tip: </strong>If RTT is supported by your carrier, your iPhone will default to RTT protocol once the call begins.</p></aside><h2>How to type text on an iPhone during an RTT/TTY call</h2><p>To send a text during an RTT/TTY, type it out as you would a text message in the call field. If <strong>Send Immediately</strong> is switched on, the recipient will see each character as you type. </p><p>If it's switched off, tap the arrow symbol in the message window to send your communication. Finally, if you'd like to send audio, simply tap the microphone symbol and begin speaking. </p><h2>How to review the transcript of an RTT call on an iPhone</h2><p><strong>1.</strong> Open the <strong>Phone</strong> app.</p><p><strong>2.</strong> In the <strong>Recents</strong> tab, scroll until you locate the RTT/TTY call you want a transcript for. </p><p><strong>3.</strong> On the call line, tap the <strong>Info </strong>symbol, which looks like the letter "i" in a circle. <br><img src="https://static1.businessinsider.com/image/60cbaf6020bd1300181c6fca-750/RTT 5.jpg" border="0" alt="The recent calls list on an iPhone with a red arrow pointing to the " data-mce-source="Abbey White/Insider" data-mce-caption="Tap the &quoti&quot icon to view your RTT call transcript."></p><p><strong>4.</strong> Tap the <strong>Download icon</strong> in the upper-right corner and follow the remaining prompts.</p><bi-shortcode id="related-article-module-end-of-article" class="mceNonEditable"><a data-type="6094839c16fb07686b4a41b8" data-title="What is an RTT call' How the text accessibility feature lets you send real-time text messages" data-url="https://www.businessinsider.com/what-is-rtt-call" data-vertical="sai" data-image="https://i.insider.com/6095c10ef22c6b00185dd19f">What is an RTT call' How the text accessibility feature lets you send real-time text messages</a><a data-type="5f08bd9ef34d0541aa4110f8" data-title="What is alt text' How to use the page element for images to improve your website's accessibility and search ranking" data-url="https://www.businessinsider.com/what-is-alt-text" data-vertical="sai" data-image="https://i.insider.com/5f08bf52988ee348577a7da3">What is alt text' How to use the page element for images to improve your website's accessibility and search ranking</a><a data-type="5f062a36aee6a84837623cd3" data-title="A guide to text-to-speech, the popular accessibility feature that lets your computer, phone, or tablet read to you" data-url="https://www.businessinsider.com/what-is-text-to-speech" data-vertical="sai" data-image="https://i.insider.com/5f06381b5af6cc47977c042a">A guide to text-to-speech, the popular accessibility feature that lets your computer, phone, or tablet read to you</a><a data-type="5f08c667988ee34da10fb937" data-title="How to get a Windows computer to read text aloud to you using 2 built-in screen-reading tools" data-url="https://www.businessinsider.com/how-to-get-windows-to-read-text" data-vertical="sai" data-image="https://i.insider.com/5f08d658aee6a82b822751d5">How to get a Windows computer to read text aloud to you using 2 built-in screen-reading tools</a></bi-shortcode><p><a href="https://www.businessinsider.com/rtt-iphone#comments">Join the conversation about this story »</a></p>
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