Sometimes I mumble my words. Can I still use speech recognition?

Be mindful of what you want to say and speak each word clearly. Mobile Voice needs to hear clear word boundaries, so practice speaking each syllable, especially the ending sounds. If you need to take an extra second or two to think about what you want to say, go ahead. Then start the recording when you are prepared to say what you mean to say. Continue to speak at a conversational pace, just like you would with a colleague or a friend.