bet the receptionist had her mobile on under the desk :s and u can bet the nurses do too. 
Agreedclivew said:
It's quite simple for us though, if the passenger does not turn off their phone, or gives us any lip, we'll just off load them, or worse get them arrested! :tsk:
I think the same reason applies in hospitals, it's to try and reduce disruption to other patients, some of whom may be feeling bad enough as it is without a load more noise in their ear!