Background: Mobile phones have become indispensable in contemporary life, particularly for young adults. Although mobile technologies, devices, and software have undoubtedly improved our lives in certain areas such as medical applications, we often overlook their potential negative effects. Aim & objectives: This study aimed to investigate the effect of mobile phone usage minutes before falling asleep on sleep quality. To achieve the aim of the study, the objectives were to examine the correlation between mobile phone usage prior to falling asleep and three key factors: (i) sleep duration, (ii) subjective sleep quality, and (iii) excessive daytime sleepiness among health trainees at Raipur Institute of Medical Science, Raipur. Materials & methods: The study was approved by the Institutional Ethics Committee. This study was conducted in July and August 2018. The study included a representative sample of 100 health trainees from diverse training programs. The age range of 17–23 years included both male and female college students. All health trainees from the various programs who agreed to participate in the study met the specified inclusion criteria. Results: In total, 100 students were included in this study. The average age of the students was 20 years old. Among the participants, 29 (29%) were males and 71 (71%) were females. 22% of the students reported using their smartphones for less than 15 minutes before going to sleep, 28% used them for 15-30 minutes, 29% used them for 31-60 minutes, and 21% used them for more than 60 minutes. According to the PSQI score, 49% of the students exhibited satisfactory sleep quality, while 51% displayed unsatisfactory sleep quality. Conclusion: The findings of this study suggest that reducing smartphone use prior to sleep can significantly improve sleep quality. Future research should explore the long-term effects of smartphone usage on sleep quality and investigate potential interventions to promote healthier sleep habits.