What does spotlight search mean in Apple's mobile phone?

Spotlight in Apple products is a quick indexing function, which searches all things related to keywords in the system according to the settings, including contacts, information, emails, songs and so on.

Apple mobile phone spotlight search usage: any screen of the main screen is pressed down in the middle of the screen, and a search box will appear at the top of the screen. This is the spotlight.

You can modify Spotlight through settings, and set what you want to search in Spotlight and what you don't want to search.

For items that you don't want to search, just remove the blue tick in front. You can also hold down the handles of the three horizontal lines on the right and drag them up and down to arrange the order. This operation directly reflects the order of search results in Spotlight.