Just tested the remote access of my Cam-Outdoor myself. I walked out of my home far enough to let my iPhone loss the internet connection, but the 5G phone stream/data is still available. In such case, surprisingly I can still access/monitor my Cam-outdoor to see people move nearby. I am very curious its working principle. As my understanding, WYZE Cam-Outdoor is connecting to my home local network, which is not exposed to external. How could my iPhone can access my Cam-outdoor remotely via the phone lines? I do not sign any extra services, no Cam Plus, etc. Could someone explain it to me?