To get the most accurate reading:

- Hold your phone in open air. Make sure the microphone (usually at the bottom of your phone) isn’t covered by your hand or clothing.

- Check that the microphone is clear of dust or debris.

- Do not use the app to measure sudden impulse sounds, such as fireworks.

Keep in mind:

- The app can’t detect microphone damage.

- Some phone cases may obstruct sound readings.

- dB readings are A-weighted (dBA), which reflects how we hear sound.

- Our guidance is based on the live sound level at that moment, not your total daily exposure.