Listen to audio books and music through your phone's earpiece when you don't have earphones handy. Boost your audio (Android 2.3 through 4.1 or so only, not working on 4.2.1 or higher), whether through earpiece or through the speaker. Earpiece is a simple, light-weight audio-control app. You can pop Earpiece up on top of another application simply by holding down the SEARCH key. In the options, you can enable an experimental feature which switches the phone to speaker phone when it's away fr