Got some spare cash saved away, and want to start looking into building a financial portfolio and perhaps investing for your future? Putting your smartphone to good use every now and again, and spending your time on it productively rather than just for mindless social media scrolling and games, can actually help you to reach a better financial position before you’ve even noticed.For those interested, here are a few different tips on how you can learn to invest successfully using your smartphone.Getting generally financially savvyTo start with, the smartphone that you keep in your pocket ...