WARNING

I have not done Unity development in many years, and have no intention of updating or maintaining this package and am archiving the repo. Feel free to fork away.

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Unity iPhone Speaker Fix

When using microphone input, Unity iPhone switches audio output to the earpiece speaker, instead of the usual speakerphone speaker. As a result, all the audio in game suddenly becomes very quiet, even at max volume. In particular, this is problematic for games which include voice-chat.

How-To

Simply install the Unity package, and add a call to iPhoneSpeaker.ForceToSpeaker() after you call Microphone.Start().

Credit

Base code from these two SO threads:

• http://stackoverflow.com/questions/9784573/play-and-record-audiosessionsetproperty
• http://stackoverflow.com/questions/5036399/how-do-you-force-audio-to-come-out-of-the-iphone-speaker-when-a-headset-is-attac