Last year in this column, (“Cellphones put on cops’ do-not-search list,” July 17), I discussed the U.S. Supreme Court’s decision in Riley v. California, where the court unequivocally rejected cellphone searches following an arrest. As part of that discussion, I pointed out that the Illinois Supreme Court’s opinion in People v. Cregan — which was a recent case, yet preceded Riley — appeared to run contrary to the constitutional floor established by the court in Riley. As I …