When a juror indicates that some other jurors are using their cell phones and meeting in a second room, does this require a district court to hold a Remmer hearing to determine whether there is an external influence interfering with the jury process?

May a district court request a partial verdict form be filled out by the foreperson of the jury without any indication that the jury is at an impasse?

Whether a district court must hold a Remmer hearing when a juror indicates that other jurors are using cell phones and meeting in a second room