Dualshock 4 to Xperia 5

[Aaron260391]

Hi, I was hoping someone could help me. I have an Xperia 5 phone and I'm trying to connect a dualshock 4 controller to it. If I connect through Bluetooth, it connects fine, says it's connected but doesn't function at all. I've tried it on a Samsung phone and everything works fine. I've also tried it on my Xperia Z2 tablet, this does the same thing as the Xperia 5. Any ideas? Thanks