Apple's text message jumped out of the small window.

The SMS notification function of Apple's mobile phone jumping out of a small window is a function launched by Apple, which is called "SMS popup box" or "SMS preview". When you receive a short message, the system will pop up a small window at the top of the screen to display part of the short message.

The purpose of this function is to make it convenient for users to quickly preview the short message content while using the mobile phone, without completely opening the short message application. You can reply to the message directly in the small pop-up window, or just ignore it.

If you want to turn on or off the SMS pop-up function, you can adjust it in the settings of your mobile phone. Open the Settings application, then select the notification or message option, and then find the SMS item, where you can set whether the SMS pop-up box is allowed and how to display it.

It should be noted that this function is only available on devices with iOS system, and it is turned on by default. If you are not using an Apple phone, you may not be able to enjoy this function.