PlayLink is a companion app created by Sony. It offers you a way to control your game with your smartphone or tablet instead of the DualShock controller.
To use this service, your PlayStation 4 and your device have to be on the same local network, and your device must be compatible with PlayLink.
If you are unsure if your device is compatible, please consult your device manufacturer.
You will find more information about Playlink on Playstation's official website.
If you are having issues with any of our games while using the service, please complete our troubleshooting guides for Android or iOS.
Let us know if you have any other questions!