If you have subscribed to Voicemail to Text transcription, you can share a transcription of a received voice mail on Google+.
Follow these steps to post from voicemail.
1. While in the Message Playback screen, tap the Share menu option. You will be presented with a list of message share types.
Note: This list and its share via Google+ option will appear only if the message being shared was transcribed by the Voicemail-to-Text service. It will not be available otherwise.
2. Select Google+. At this point, you may be asked to log into your Google+ account. If this happens, enter your Google+ account's log in credentials, then tap Log In.
3. If you want to edit the transcription before sending, tap the transcribed text. (The on-screen keyboard will appear.)
4. When you are satisfied with the text, tap Send to post it.