Smartphone (IMAGE) Michigan State University Caption Using a smartphone to cram in more work at night results in less work the next day, indicates new research by a team of current and former Michigan State University researchers. Credit Michigan State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.