A title is required.
On the technical side - is there any peer-reviewed evidence that mobiles ever interfered with hospital equipment? I couldn't find any. IMHO, the real reason they're banned is for yet another private company to bludgeon cash out of people by providing a vastly over priced "service" <insert rant about trains, buses, parliament, Brussels as appropriate>
On the human side, FFS, ban the damn things, the doctors don't want them, the nurses don't want them, and the patients don't need them.
The best thing hospitals can do is retain the ban, ideally enforcing it even more strongly than now, and leave patients in peace - hospitals are supposed to help you recover, and being annoyed by someone blathering away on a mobile is never going to help that.
It's bad enough on the train. If our government wanted us to be healthy, they could reduce stress and heart disease overnight by painting public transport with conductive paint.
Yeah, I know, hospital is where most people go to die, and are excellent places to catch a dose of C-Diff, Ebola, or MRSA, but at least give us a bit of peace while we're there! First thing I'll be asking for if I wake up in A&E will be a jammer...