PS4 controller won't connect to PS4

[TechNut79]

I connected my nephew's PS4 controller to my Note 20 Ultra, and now it won't connect back to the PS4. Any ideas? All I get is a slow blinking white light when I try to turn it on.

 

[SpookDroid]

You need to connect the controller via USB cable to the console to re-pair. Unfortunately the PS4 remote can only stay connected/paired to a single device at a time (I know, sucks!).

https://www.playstation.com/en-us/support/hardware/ps4-pair-dualshock-4-wireless-with-pc-or-mac/

Reconnect DUALSHOCK 4 wireless controller to your console
To reconnect your wireless controller to your PS5 console or PS4 console, connect it with a compatible USB cable and press the PS button on the wireless controller. You can then remove the USB cable and use the controller wirelessly.