Apple has told the US District Court in California hearing motions for the upcoming second patent-infringement trial against Samsung that it intends to add the Galaxy S4 as an infringing device. In order to do so, the iPhone maker will have to drop one of its previously-listed infringing devices from the list, such as the Galaxy S III, S II, Note or Nexus (among other possible models). Judge Lucy Koh is attempting to keep both companies down to a minimum number of patent claims and infringing devices.