When the RTT call comes into your phone, you'll see this message: "RTT allows text messages to be sent during a phone call between recipients. This service is typically used by those with hearing impairments. Press the RTT button to communicate using text with the caller.". Tap Got It to accept the RTT call.What does RTT mean on the phone?
RTT stands for Real-time Text, a call feature that assists deaf, heard of hearing, and other phone users with communication during voice calls. Sladic/Getty RTT, or real-time text, sends text messages immediately as you type them, without requiring you to hit send.What is real time text calling?
Real-time text (RTT) is text transmitted instantly as it is typed or created. Recipients can immediately read the message while it is being written, without waiting. Real-time text is used for conversational text, in collaboration, and in live captioning.