How to improve the audio quality on your iPhone Learn how to fix common iPhone audio issues and enhance sound quality with speaker cleaning, equalizer adjustments, and spatial audio settings. It's not in your head - sometimes the audio coming out of your iPhone doesn't sound quite right. Muffled audio, for instance, can mean that something is off with the speaker. Sometimes, the audio can suddenly drop in quality when you switch to cellular data, likely indicating some data-saving settings are in effect. You may even just want to enhance audio in other ways, whether it's based on personal tastes, a need for immersion, or your inner audiophile craving a lossless sonic experience. Whatever the case, you can improve the audio quality on your iPhone with a few tweaks.These include cleaning your speakers, adjusting the equalizer settings, and enabling options like Spatial Audio. Some of the solutions will require you to buy an inexpensive accessory that allows you to escape the lossy compression of Bluetooth audio. One thing about cleaning your iPhone's speakers is that, if it doesn't get rid of the muffled audio, there could be a hardware fault.If your iPhone still has AppleCare (the basic, free one-year warranty that comes with every iPhone from the date of purchase) or the AppleCare+ extended warranty, you should schedule a Genius Bar visit to have them check out the hardware