Deaf people can use the app Live Transcribe to read what others say.
Introducing Live Transcribe
Now the hearing and the deaf and hard of hearing can have conversations easily, with just an Android phone.
Live Transcribe is an accessibility app designed for the Deaf and hard of hearing and usable by anyone. Using Google’s state-of-the-art automatic speech recognition technology, Live Transcribe performs real-time transcription of speech and sound to text on your screen, so you can more easily participate in conversations going on in the world around you. You can also keep the conversation going by typing your response on the screen.