This study was designed to measure the impact of smartphone usage among college students on their current academic success. We report the results from a survey among 99 undergraduate student iPhone users in a large Midwestern U.S. university. The survey combines objective smartphone use time directly obtained from Apple's ScreenTime feature with official GPA and ACT/SAT scores from university records. We evaluate how GPA and self-reported measures of academic success are determined by ACT/SAT scores, demographics, school-related variables, study-related variables, socio-economic variables and time spent using one's smartphone. Our results suggest that one additional hour of phone use per day lowered current term GPA by 0.152 points on average. Time spent using a smartphone significantly reduces GPA and self-reported measures of academic productivity.

本研究旨在衡量大学生使用智能手机对其当前学业成功的影响。我们报告了对美国中西部一所大型大学的 99 名本科生 iPhone 用户进行的调查结果。该调查将直接从 Apple ScreenTime 功能获得的客观智能手机使用时间与大学记录中的官方 GPA 和 ACT/SAT 分数相结合。我们评估 GPA 和自我报告的学业成功指标是如何由 ACT/SAT 分数、人口统计数据、学校相关变量、学习相关变量、社会经济变量和使用智能手机的时间决定的。我们的结果表明，每天多使用 1 小时电话会使当前学期 GPA 平均降低 0.152 分。