Write SMS By Voice: Voice SMS is a free application that is designed to help users write SMS messages by speaking them aloud. Once the app is installed, all you have to do is dictate a message to get it converted to text. The app will listen to your speech and convert it into a text message. Once the message is generated, you can use the Send button to send it to any other phone number.

To make the process smoother, the app uses a speech-to-text converter. This means that it can convert any audio file into text.
This app can be used to send messages to your friends and family.  It is also designed to work with people who can type but prefer to dictate their messages.