When you are in the ER…would you be permitted to use the phone by the hospital personnel?
I've worked in an inner-city ER, so I'll take a crack at this one. Most ER bays and especially rooms at modern hospitals have phones. Hospital staff I've seen are more than happy to let the patient use the phone for local calls (keeps the patient happy, and out of their hair).
There is of course a caveat: if the cops feel a need to stand over you the whole time, you may or may not be allowed by them to make a phone call. Of course, even without the cops, you have no guarantee of privacy.