Visit your Settings, then tap “Sounds and Vibration” then select “Sound quality & effects” Then tap “Adapt Sound” and then “Personalised Sound” Now you’ll take the hearing test. Find a quiet place to sit and then connect your earphones or headphones to your phone The test will play a series of beeps in both of your ears. After each frequency, the test will ask if you can hear it. As you provide honest answers, your phone will create a personalised equalizer profile for you After the test is complete, you’ll be asked which ear you prefer to listen to phone calls. After that, the process is complete and your customised audio profile is complete!