Detective Rollins is shown saying "hit me" to get dealt another card at a casino. Casinos require this to be indicated via hand signals only and will not give a card to player who only verbally requests one.
Outside the courtroom Detective Amaro is show trying to put his phone inside his right hand coat pocket. When he can't do that (presumably because there is no pocket there) he switches hands and puts it in his inside left side coat pocket.