People are smart these days, and there is a reason why that is. Here is a business case example: When the world learned that a brick-and-mortar outfit was not going to be able to make it without a bit of e-commerce, websites sprung up and made history. But did the buck stop rolling there? Certainly not! A paradigm shift happened, and what we notice now is that most youngsters with the business itch have begun using their mobile phones to start a venture – some of them have become very successful too. If you want to be a successful mobile business entrepreneur, here are five businesses that you can start just by using your smartphone!