Unsolicited robocalls have become a serious epidemic lately. A recent study shows that the number of spam calls has been rising across the country at an alarmingly rapid pace. People in the U.S. receive an average of just under 19 spam calls every month. That’s why you need to know how to stop annoying robocalls on your smartphone. One way to try and stop these intrusive calls is with robocall blocking apps. Kim shows us some of the best options available.