They are sometimes encrypted but setting up a cell tower proxy (femtocell) let's you disable encryption to connected devices and then you can read any texts sen

They are sometimes encrypted but setting up a cell tower proxy (femtocell) let's you disable encryption to connected devices and then you can read any texts sent/received through your femtocell. Watch the defcon/blackhat presentations showing this. First one I remember watching was maybe 10 years ago.