Aim of the study is to determine the complication of hand due to over usage of smart phones, to prevent the complications by proper way of handling mobile phone and to prevent an epidemic of smartphone induced diseases especially in hand. Methodology was Study designed as systemic review, The Study setting is done in Google scholar, MEDLINE, PubMed and Research gate, sample size was 230 published studies describing about smartphone and its complication due to overuse in which only 20 articles were selected for the review in Pub med central library. Results shows Out of 20 studies 8 studies shows that the common complication of hand due to over usage of mobile phone is De Quervain’s tenosynovitis, 7 studies shows the 1st carpometacarpal arthritis, 2 studies has shown thickness of flexor pollicis longus. For preventive measures 1 study shows the target size should be 9.2mm in single task and 9.6mm for multi task, 1 study has shown during sitting the thumb, trapezius and forearm muscle activities are low, 1 study has mentioned that using mobile phone with two hands in landscape provides stability as well as faster input. By reviewing the studies, we conclude that the size of screen should be 4.7 inch or less, thickness should be 1.5 to 2 cm, curvature should be 6mm, the smart phone should be hold in landscape position and in sitting posture. Using the smart phone in the following way can prevent the Complications of hand.

Keywords : De Quervain’s Tenosynovitis, Smart Phones, Flexor Pollicis Longus, Prevention, Prevalence.