RTT calling and TTY are accessibility features that help the deaf and hard-of-hearing community make text-based phone calls. Read on!

You may have seen the acronym RTT or T at the top of your phone screen while making or receiving a call. RTT stands for "Real-time Text," and is a feature that instantaneously transmits the text ...

How to type text on an iPhone during an RTT/TTY call. To send a text during an RTT/TTY, type it out as you would a text message in the call field.

You may have seen the RTT feature on your iPhone and wondered what it's all about. It's an accessibility feature. Here's what it does and why people need it.

To turn off RTT on a Galaxy S10 device: Go Settings app. Tap on More Settings icon. Tap Bluetooth Settings. In here, make sure that audio is not connected to a headset.