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QuietComfort® 20i Acoustic Noise Cancelling™ headphones – Apple® devices

Sold from 2015 – 2015

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If sound is missing from the left or right ear while listening to your product, try the following:

If you experience static, distorted audio or unexpected noises from headphones when loud noise around you, note the following:

If you experience distortion, crackling, static, noise or unexpected poor sound quality from your product:

If you hear a high-pitched whine or whistle from one or both ears while using your product, try the following:

If you hear excessive low frequencies from your product, the sound quality might be boomy, muffled or difficult to hear. To reduce the bass response and/or increase the treble response, try the following:

To resolve this issue, try the following:

If you don't hear enough low frequency audio from your product, the sound quality might be tinny, shrill or lacking fullness. To increase the bass response or reduce the treble response, try the following:

If your product seems to be set up properly but does not produce sound, try the following:

If the sound played from your product cuts in and out, plays inconsistently or is choppy-sounding, try the following:

If your product produces unexpected ticking, clicking or popping noises when turning on, try the following:

If one of the speakers in your product cuts in and out, is of low volume or produces poor sound quality, try the following:

If the volume level heard from your product is faint or quieter than normal, try the following:

If you hear a pulsing, whirring or vibrating type of sound coming from a component of your product, try the following:

If the microphone on your product picks up your voice quietly or with added noise that makes it difficult for others to understand you during phone calls with your product, try the following:

If the microphone on your product picks up your voice inconsistently or people say you are cutting in and out when making phone calls with your product, try the following:

If the microphone on your product does not pick up your voice or people cannot hear you talking when making phone calls with your product, try the following:

If the battery charge level drains at a faster rate than expected, try the following:

If you experience static, distorted audio or unexpected noises from headphones when loud noise around you, note the following:

The combination of both active and passive noise reduction technologies in your headphones is desgined to block out most sounds but may not block out everything. You may still hear higher pitched sounds like sirens and even human voices, although the volume of these sounds should be dramatically reduced. If you feel you are not geting any noise reduction with your headphones, here are a few steps you can try.

If your product produces unexpected ticking, clicking or popping noises when turning on, try the following:

If power to your product seems intermittent or it powers on and off unexpectedly, try the following:

If your product is connected to power but does not appear to be receiving power, try the following:

If the answer/end button on your Bose headphones or Bluetooth speaker is not answering or ending phone calls, try the following:

If you push the buttons on your product but they do not respond or do not control you product as expected, try the following:

Proper fit is important for product comfort and performance. Get tips on how to properly fit and adjust your headphones.

Proper fit is important for product comfort and performance. Get tips on how to properly fit and adjust your headphones.