I have a 5s with the ios 8.0.2 update, but in my imessage the microphone icon is not next to the text line that will allow me to send voice texts, what do I do?
Are you using an alternative keyboard? If so go back to the Apple stock keyboard and the option should be there.
Cant remember if the Enable Dictation option was added to 8.0.2 or 8.1 so also look at settings > general > keyboards then at the bottom is the option for Enable Dictation. If it is not there then it will be on Monday after 8.1