Interesting issue… I was using my IPhone XS with a physical SIM as a presence sensor. It worked about 90% of the time, which I gather is pretty good. Yesterday I contacted Verizon and converted my account to use the eSIM so that I could install a physical SIM when traveling overseas. After doing this, my phone quit working as a presence sensor. I figured it was due to the SIM change, so I deleted my phone from SmartThings using the app and then tried to add it back. No luck. I keep getting the message “You cannot set up a device without cellular service as a mobile presence device”. I’m using the Classic app on my iPhone.
Any thoughts on how to address this?