While many folks shop online to find a white noise machine, which can range from $20 to more than $100, there may be no need.

iPhones running on iOS 15 or later all have ... From there, you’ll be able to use the triple-tap trick to turn on the white noise. Background sound for sleep can be helpful for several reasons.

The setting is not labeled as “white noise,” but is instead called “background sounds” on your iPhone. To get to this feature, go to Settings > Accessibility > Audio/Visual > Background ...