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No audio in one ear | Bose mobile in-ear headset
Remove the device from its case or protective sleeve (if applicable).
If a case or protective sleeve is on your device, try removing it to determine if it is preventing the headphones plug from making a full connection.
Try a different app.
If the issue only occurs with a particular app, it is likely related to the app or app settings.
Try playing different types of media.
Different media types might produce different quality sound. For example, Podcasts, music stored locally on your phone, MP3s, streaming music services (Spotify, Pandora), videos on your device or stored in the cloud, etc. can all vary in quality. Try different media to determine if the issue is specific to certain media.
Plug in a different pair of headphones.
Connect another pair of headphones to the audio device to determine if the issue is with the device or its settings.
Be sure the connected device supports a 4-conductor headphone plug.
One of the four rings on the 1/8" (3.5 mm) plug on your product is for the microphone. Most devices without microphones have a 3-conductor jack. With some of these devices, inserting a 4-conductor plug can cause poor or partial audio, loss of voices in music or it can prevent the built-in device speakers from muting when headphones are connected. If these issues occur, consider purchasing a 4-to-3-conductor adapter.
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