Sony finally adds support for all Android devices running Android 5.0 and above for the PS4 Remote Play application. The function of this so far is exclusive to Xperia devices before extended to support iOS back in March. The Remote Play app basically allows you to mirror your PS4 on your phone or tablet via Wi-Fi.
In order to get the features and working, you should update your firmware to version PS4 7:00 and set the Remote Play application on your device of choice (Android 5.0 and above). Then the console and the phone / tablet will connect via Wi-Fi which allows portable gaming session during stable Wi-Fi connection.
IOS Android 10 and 13 users will have the ability to connect a DualShock 4 controller via Bluetooth for a better gaming experience. For optimal results, Sony recommends that the PS4 is connected via LAN cable.