
If you are one of those who when you listen to music you can only use one headset, because you have to pay attention to what is happening around you, you are listening to music with poor quality, because the stereo is activated on all mobiles. However, the best thing to do is turn off stereo and turn on Mono audio.
Mono Audio
Stereo audio offers us more quality music, because we hear different frequencies through each earphone. However, this is a big problem if we are listening to music with a single earphone, because we are losing sound frequencies. However, there is an ideal solution and that is to turn off the stereo audio and turn on the Mono audio. Although it is generally a lower quality audio, what you get is that you hear exactly the same through each of the headphones. And therefore, we will be listening better with a single earphone than with the stereo activated.

How to activate Mono audio?
Not all mobiles are the same, and not in all mobiles we will have the possibility to deactivate the stereo and activate the Mono audio. If your mobile has this option, you will usually find it in the Settings section, under Accessibility. It is usually called Audio Mono, and we have to activate it. Some mobiles may include this option in Settings and in the Sound section. It could appear as Mono Audio, or as Stereo Audio. If it is the latter case, we will have to deactivate it, instead of activating it. Finally, it is also possible that the music app has the option to equalize the sound, and that here we have the option to deactivate the stereo audio.
With this small modification we can achieve a better quality audio when we use a single headset. Obviously, it will never sound as good as when we use two headphones in stereo, but if we have to use a single earphone, we will at least improve the sound quality somewhat.