People use their phones 24/7 and don’t want to separate even for a second. Research by Pew Research Center has revealed that 85% of young adults in the US own a smartphone. The big trend of mobile phones has transformed the traditional way businesses did their marketing. With more technological advancement, a new marketing channel has evolved which is known as geofencing. In this article, we will learn about SMS geofencing and answer the most important question: how does SMS geofencing work?