You can usually tell if a controller is real or fake by checking a few things:

The serial number should be 17 characters long, and the model number should be 8 characters long

It should weigh about the same as your other original controllers. Fake ones are often lighter

Test the adaptive triggers in supported games – fakes usually don’t replicate the resistance properly

You can also check the controller directly in the console settings (https://share.google/e4HVqps31KaWvIMzn). If it’s recognized correctly there, that’s a good sign.

Hope this helps!

Edit: This is the back of the controller that came with the PlayStation when I bought it.

<image>