People uses mobile phones and they carry them handy throughout the day. That means you can reach your  customers wherever they are instead of having them wait until they log on to the internet with a computer in front of them,  Mobile advertising follows people wherever they go and does not depend on any single location. You have round-the-clock access to your customers. And when it comes to cost, mobile advertising costs a lot less than television and radio ads cost. This means you can reach more people for less money.