How do I reconnect my PS4 controller back to my PS4?

How do I reconnect my PS4 controller back to my PS4?
How to sync a PS4 controller

Step 1: Plug the USB cable into the controller, then into the USB port in the PlayStation 4.
Step 2: When you turn on your PS4, your controller should automatically connect with your PlayStation, thanks to the USB cable.

How to sync a PS4 controller
  1. Step 1: Plug the USB cable into the controller, then into the USB port in the PlayStation 4.
  2. Step 2: When you turn on your PS4, your controller should automatically connect with your PlayStation, thanks to the USB cable.