The article RTT: Send real-time messages while making calls-this is how it works first at the online magazine Basic Thinking. You can start the day well every morning via our newsletter update.
In the future, calling will be barrier -free, especially for people with restrictions when listening and speaking. Because: A new communication technology enables real-time text (RTT)-i.e. sending text messages while calling.
Usually you have to decide: either call or send a message. However, there has recently been a new message technology: RTT-Real-Time-Text (in German: real-time text).
With this new function, smartphone users can not only speak during a phone call, but also send messages in real time at the same time.
RTT: Real-time text during a call
RTT works directly via the mobile network without an additional app. In order to communicate with each other, both interlocutors have to activate the function. Then you can enter text in real time in parallel to the conversation – each letter is transmitted immediately and displayed on the device of the other.
RTT on the iPhone:
To RTT on the iPhone to activate, go into the Settings on “Operating aids“And then on”RTT“. There you activate”Software RTT“.
If your device is a dual SIM model, you select the desired line. Then you tap on “Relay number“And enter the telephone number to be used to forward calls software -based.
Then you activate the option “Send“If each character is to be sent immediately after the input. You can deactivate this function if necessary. Then your messages will only be sent when you have typed them in completely.
You also have the option of accepting all calls as RTT. You can also the technology About your iPad and About your Mac to use.
RTT via Android:
Do you want the function for Android Activate, you open them Settings of the phone app. You can already use RTT for the connection or change during a call.
Important: RTT telephony is available if you are option in the settings of the phone appAlways visible“Selected.
If you want to use the function during your next call, you tap on “RTT” when choosing the contact. While the smartphone rings, an invitation to the RTT call is displayed on the other person’s screen. Alternatively, you can switch to text mode while calling.
RTT about Samsung:
If you want to use RTT with a samsung, you open them Telephone app And go to the three-point menu. Then you scroll to the rider “Real-time text“.
Real-time messages for more accessibility and in an emergency
The new technology was introduced to improve accessibility in telecommunications. The innovation is based primarily on legal requirements such as that Barrier -freeness strengthening law (BFSG) and that European Accessibility Act (EAA). They oblige providers to make their products accessible to people with restrictions.
The largest German mobile operators, including Telekom, Vodafone, Telefónica and 1 & 1, introduced RTT on June 28, 2025. The aim is to give everyone equal access to communication and replace outdated functions such as TTY (text telephone for hearing and language victims).
The new function is also suitable for people in loud environments and for older people with limited hearing. It could also offer the necessary help in situations in which speaking is impossible or dangerous.
In the future, victims can communicate discreetly with the police or fire brigade via real-time chat. However, RTT should only From summer 2027 become mandatory for emergency calls. Then the function is accessible via the usual emergency numbers 110 or 112.
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The article RTT: Send real -time messages while making calls – this is how it went first on Basic Thinking. Follow us too Google News and Flipboard Or subscribe to our update newsletter.
As a Tech Industry expert, I believe that real-time messages while making calls is a valuable feature that can enhance communication and collaboration. This feature, known as RTT (Real-Time Text), allows users to send text messages in real-time while on a call, providing a convenient and efficient way to communicate important information without interrupting the conversation.
RTT can be particularly useful in situations where speaking on the phone may not be feasible or appropriate, such as in noisy environments or during meetings. By allowing users to send messages while on a call, RTT enables seamless communication and multitasking, ultimately improving productivity and efficiency.
Overall, I believe that RTT is a valuable tool that can benefit users in various industries and settings, and I expect to see increased adoption of this feature as communication technology continues to evolve.
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