1. Turn the camera on.2. Hold down the wifi button (it will have a flashing wifi icon – Pairing mode).3. Below the camera, the serieal number beginning YN is your password (excluding the YN).4. On your phone open wifi setting and look for the camera and connect it.5. Open the app and then click on add interior and search for the connected camera, it will show a preview screen.If it doesn’t work, try disconnecting and connecting again or delete the app and download it again.