How to improve the audio quality on your iPhone

You can improve your iPhone's audio quality whether you're using the built-in speakers, headphones, or a speaker.

You can improve your iPhone&#39;s audio quality whether you&#39;re using the built-in speakers, headphones, or a speaker. <p><img src="https://www.engadget.com/img/gallery/how-to-improve-the-audio-quality-on-your-iphone/intro-1789148882.jpg" /></p>