Unknown bluetooth connected device
Occasionally I get an unknown device connected to my iPhone (first the X, now the 12 ProMax). There is no option to forget the device as the blue "i" icon is not present for it. All the other named devices my phone can connect to are present. The device name is not something like AirPods or iPad but an alphanumeric string; currently it is S2214e82a1464ad06C. Turning Bluetooth off and back on does not sever the connection.
iPhone 12 Pro Max, 14