Many iPhone users use a Bluetooth headset on their phones. However, they may not know that you can use the same headset to listen to their Visual Voicemail.
To listen to your voicemail through your headset, just navigate to Phone > Voicemail. Once there, click the "Audio" button in the top right -- you will be presented with some options. If you have your headset paired with your iPhone, you will see a headset option along with the iPhone and Speaker Phone options.
Clicking any one of these will immediately transfer the audio to the output specified.
Thanks for the tip, Brandon!
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