We often take phones for granted, not realizing that not everyone can experience things the same way. That is why accessibility features are so important on smartphones, as they open up smartphone experiences to an even more inclusive audience. One such accessibility feature is RTT calling, and while its primary use cases are centered around accessibility for the deaf and hard-of-hearing community, it can even come in handy during emergencies. What is RTT calling, and how can you make use of it? We will tell you all about it in this article.