Having some familiarity, how often do you think " ... and extract as much as is covered either by their search warrant or by the signed consent form of the phon

Having some familiarity, how often do you think " ... and extract as much as is covered either by their search warrant or by the signed consent form of the phone's user" is an accurate description of what actually happens in the field? Does a UFED even have a way of selectively extracting only what's covered by a warrant? Are warrants usually granted that would be considered outrageous fishing trips by the more privacy aware of us here?