Listening to natural sounds can lower stress, relieve perceived pain and foster a more positive disposition, according to ...

The Sun Then you can turn Background Sounds on or off just by triple-clicking your iPhone's Side Button (the one that locks the phone). Another handy trick is the built-in iOS music timer.

So instead of buying a new white noise machine, save yourself some money and just use your iPhone. 1. Tap Settings. 2. Tap Accessibility. 3. Tap Audio & Visual. 4. Tap Background Sounds.