It is necessary to access to the Internet for using AirMirror, otherwise it will not work. In certain circumstance, it's impossible to access to the Internet all the time when the Smartphone with the AirMirror app and the other device ought to be monitored in the same network segment. Therefore, I hope you guys add a new function which allows users to add device by its LAN IP manually or search all devices in local network, so we can use AirMirror no matter with or without internet. Thanks!