how to upgrade my imessage app

[iMore Question]

want to be able to give a quick voice message in my text app iPhone 5c but don't see the microphone just send button

 

[Flow39]

want to be able to give a quick voice message in my text app iPhone 5c but don't see the microphone just send button

If you are still running iOS 7, you will need to upgrade to iOS 8, because the voice feature was added in iOS 8.

 

[Premium1]

want to be able to give a quick voice message in my text app iPhone 5c but don't see the microphone just send button

You need to be on IOS8. But it should be there.
https://www.apple.com/ios/whats-new/messages/#mn_p