LG has focused on the audio output of the headphone jack rather than the speaker on the LG V10. On my review unit the sound was so awful on the speaker that I had to use headphones for everything. One upside to this is the inclusion of Hi-Fi DAC output from the headphone jack. Audio sounds incredible when this is enabled. The only issue is that it only works for a few music apps including the stock music app. If you want to experience the DAC audio for apps like Spotify, Pandora, or Play Music now you can thanks to the "DAC Fix for LG V10" app. One installed this enables the high quality amp driven audio for any app on your phone. Grab it from the link below.
via Play Store