Is it possible to use the remote contoller of my P4A on a P4PRO?

Hello, there. Thanks for your inquiry. We here will explain the compatibility of remotes controller Phantom 4 series.
1)     The Phantom 4 remote controller cannot be used for Phantom 4 Advanced and Phantom 4 Pro, but the Phantom 4 Advanced and Phantom 4 Pro remote controller can be used for Phantom 4. Meanwhile, the Phantom 4 Advanced remote controller and Phantom 4 Pro remote controller are interchangeable.

2)     The Phantom 4 Pro V2.0 remote controller and Phantom 4 Pro remote controller are not interchangeable.

3) The remote controller with a built-in screen (GL300E) of Phantom 4 Pro + can be used for Phantom 4/Phantom 4 Advanced/ Phantom 4 Pro. Please note that the corresponding aircraft model can be selected under Advanced Settings in the remote controller. Then restart the remote controller and link it with the aircraft.

Thank you for your quick reaction !!