Press and hold the PS and Share buttons on your DualShock 4 until it enters pairing mode (shown by the flashing white light bar on the back of the controller). Open your Android phone's Settings app.

You can easily connect a PS4 controller to ROG Phone 3 using Bluetooth. This allows you to enjoy playing games that have controller support. All you need to do is to pair the controller to your phone ...

For gamers, backwards compatibility is always a "green" flag since this will allow them to play games from older consoles. It has been a cornerstone of console gaming for many years, to say the least.