Background: Past few years have seen a significant rise in mobile consumption, with these gadgets now being used for most everyday activities. Long-term consumption may therefore include poor posture, which may lead to weak strength in hand grips. Thus, using a dynamometer to assess the relationship between overuse of smartphones and hand grip strength is crucial, which may be quickly and accurately tested. Despite a few inconsistencies in the literature, hand power is supported as a marker of adverse outcomes, lethality, and loss of independence.

Objective: To determine excessive smartphone use’ effects on hand grip strength in undergraduate university students.

Methodology: Data were gathered from students with smartphones from University of Lahore. Non-probability convenient sampling was used to collect data. Analytical cross- sectional study was conducted on 385 females. To check smartphone addiction, Smartphone Addiction Scale- Short Version of 10 items, CAMRY Hand-held Dynamometer for Hand Grip Strength was used.

Results: Frequency and percent of Gender of participants' i.e., male and female are 68 and 25.2 in male, and 202 and 74.8 in female, respectively. Frequency and percent of Phone use duration groups i.e., Less and 4 hours and >4 hours are 60 and

1. in Less and 4 hours and 210 and 77.8 in >4 hours, respectively. Frequency and percent of Phone use according to SAS-SV scales score i.e., Less and 25 (Non-addicted) and >25 (Addicted) is 31 and 11.5 in Less and 25(Non-addicted) and 239 and 88.5 in >25(Addicted) respectively. Frequency and percent of Age group of participants i.e., 17-21(years) and 22-26(years) are 50 and 18.5 in 17-21(years) and 220 and 81.5 in 22-26(years) respectively. Mean ± Std. Deviation. Mean HGS with dynamometer and standard deviation was 55.73 ± 23.205, mean SAS-SV and standard deviation was 35.92 ± 8.28.

Conclusion: The purpose of the current research was to ascertain how smartphone use affected undergraduate university students' hand grip strength. According to current study, students of UOL who have smartphones and use them for more than 4 hours have smartphone addiction and their HGS measured form a handheld dynamometer is less than the standard value.16

Index Terms- Hand Grip Strength, Handheld Dynamometer, Smartphone Addiction Scale-Short-Version, students, UOL