Joke Collection Website - Public benefit messages - Why does the IPHONE status bar display missed calls and text messages?

Why does the IPHONE status bar display missed calls and text messages?

The IPHONE status bar displays missed calls and text messages, as shown below:

Step 1: Click the "Settings" icon on the desktop.

Step 2: Open the "Notice":

Step 3: Select the "Telephone" and "Information" programs respectively.

Step 4: Turn on the four options of "Apply Icon Mark", "Sound", "Display in Notification Center" and "Lock Screen Display".