It isn't a feature that is important to most users, so the mobile providers and handset makers don't really emphasize it. If it matters to you, it isn't hard to track down a handset that has a tuner.
Existing radiation portal monitors, as well as new advanced spectroscopic portal machines, cannot reliably detect weapons-grade uranium hidden inside shipping containers. They also set off far too many false alarms.
I'd say having faith in finding a bomb is misguided.
Sigmund Freud is alleged to have said that in the last analysis the entire field of psychology may reduce to biological electrochemistry.