In this Feb. 18, 2016 file photo, Republican presidential candidate Donald Trump listens to his mobile phone during a lunch stop in North Charleston, S.C.
In this Feb. 18, 2016 file photo, Republican presidential candidate Donald Trump listens to his mobile phone during a lunch stop in North Charleston, S.C. Matt Rourke AP
In this Feb. 18, 2016 file photo, Republican presidential candidate Donald Trump listens to his mobile phone during a lunch stop in North Charleston, S.C. Matt Rourke AP