I usually just text chat with my keyboard. I haven't checked out the settings to see if the game supports a headset. I suppose that if you have Teamspeak on your phone or tablet you can use that -I have the TS app on my phone and ipad.
When on a team, the game has integrated voice chat. If playing not on team I usually use PlayStation's Party chat. I created the Outreach Community on PSN for this purpose. But I think a lot of players like to play individually and don't chat socially.
You are (all) always welcome to hit me up, I'll let you know I if I'm for some reason not available to chat.