Earlier smartphones came with fewer functions but Location Based Service (LBS) were confined to simple GPS tracking device. But today, advance wireless communication system provided current smartphones with GPS service and cheaper data service fees. Apparently, LBS applications are emerging technology solutions for most businesses to connect millions of customers within close proximity. However, many e-commerce websites today are still operating without location-based service to easily connect buyers and sellers in the same locality. Nevertheless, the growth of LBS technology and LBS market have raised privacy concerns due to potential abuse of location information. This study aims to highlight the significance of location-based service and how it helped tech companies to drive significant revenue growth. It equally validates the research model focusing on privacy concern as moderator of post adoptive behavior associated with location-based applications. We used risky shift phenomenon research method to conduct an online survey using Google docs on 500 businesses. The study tends to test the effects of major variables Unified Theory of Acceptance and Use of Technology (UTAUT) on LBS usage intention and actual use. We also test the hypothesis on post adoptive behaviorusing risky shift phenomenon research on over66 users of LBS application. The research findings support the hypothesis of moderating effect of privacy concern on performance expectancy and continuous usage is strong.