Why does the iphone6 message push banner never disappear at the top?

This is because the notification persistence option is selected in the settings, and the closing steps are as follows:

1, open the phone, find the setting options on the phone desktop, and click Enter.

2. In the setting interface, you can find the notification option, and click Enter.

3. In the notification interface, find the software that needs to be changed and click Enter.

4. Find the banner style option in the software details page, and then click Enter.

5. In the banner style interface, find the temporary option and click to select it.