As to the D3400 there's no Wi-Fi connectivity, however, you do get Bluetooth, so It truly is achievable to transfer photos by using Nikon's SnapBridge attribute. In this article, an usually-on Bluetooth Low Electrical power relationship is produced between the camera and also your good unit, and you'll configure SnapBridge https://www.youtube.com/watch?v=qp14QLNDSCo