Background: Telecommunications has been revealed as one of the rapidly spreading media on the planet, encouraging an emergent “mobile culture” in younger generation. A mobile phone has made life easier by making and receiving telephone calls over a radio link to the farthest places of the world. Nomophobia is No Mobile Phone Phobia – the fear of being without a mobile device or beyond mobile phone contact. There is a growing interest in nomophobia, which is defined as the fear of being out of cellular phone contact, or "feelings of discomfort or anxiety experienced by individuals when they are unable to use their mobile phones or utilize the affordances these devices provide". Growing smartphone usage among Global and Indian college students has resulted in considerable issues of "nomophobia" or feelings of discomfort or anxiety experienced by individuals whenever unable to use their smart phones. This significantly impacts their health, work, and study.Aim/ Objective: To Assess the nomophobia behavior among smart phone user young adults. Method: Exploratory descriptive survey was conducted using SPAI scale among 115 young adults. Results: Out of 115 subjects, 21.2% were mildly nomophobic, 42.2% were moderately nomophobic and 12% were severely nomophobic. The data is indicative of nomophobia to be an emerging problem of the modern era.