Open the Settings app.Search for and select Sound quality and effects.Tap Sound quality and effects again, and then tap Adapt sound.If needed, tap Allow, and then choose your age group.To hear a preview of the different options, tap the gear icon, tap Preview, and then follow the on-screen instructions.You can also create a sound profile based on your own hearing ability. Tap Test my hearing, and then tap Start.Follow the on-screen instructions to take a hearing test and create your very own sound profile.