"Spotlight" is convenient when you are looking for something. It appears just by flicking the top of the screen downward, and if you enter an appropriate keyword, it will search for information that the app has, such as emails, apps, calendars, and weather. It can also be used to search WEB pages and Wikipedia, so it has the advantage of not having to switch screens to Safari.
However, there are likely to be pros and cons for voice input. It's a function for entering characters verbally, but it's more efficient to ask Siri from the beginning. Besides, it is not uncommon for people to get irritated by accidentally tapping the microphone button and making a loud beeping sound. This sound effect does not disappear even in silent mode, so it is not something that should be left alone.
If you want to turn off that microphone button, disable voice input. Not only Spotlight, but also the microphone key on the software keyboard disappears, but that depends on how you think about it. Even after disabling it, if you still think it's necessary, you can just display it again.
The setting method is as follows. Open the screen in the order of "Settings" → "General" → "Keyboard", and turn off the "Voice input" switch on the software keyboard setting screen (green → white).
When the switch is turned off for the first time, the microphone button is still displayed on the Spotlight bar, but when you tap the bar, you will be asked "Do you want to enable voice input?" In the dialog. If you tap "Don't do it now" here, the microphone button should disappear.
1 Microphone button for voice input on the far right of the Spotlight bar.If you tap it by mistake, you will hear a beeping sound even in silent mode. | 2 To hide the microphone button, open the screen in the order of "Settings" → "General" → "Keyboard" and change the software keyboard settings. |
3 Turn off the "Voice input" switch (green → white) and tap "Turn off voice input" that appears. | 4 When you tap the Spotlight bar, you will be asked "Do you want to enable voice input?", But if you tap "Do not do it now", the microphone button will disappear. |