Follow this guide to connect your Playstation App to your PS4
- Download app from App Store (Google Play & iPhone App)
- Turn on WiFi and have both device and PS4 connected to the same network
- Go to PS4 Settings
- Go to Manage Devices
- On your device you should see an option to connect
- Connect and enjoy!
Pretty easy. But here is a short video of how to How To Connect Playstation iOS & Android App to Playstation 4.