2. Deleted numbers on the calculator
One of the great things about modern technology is that they are of multipurpose. For instance, you can use a calculator in your iPhone. Now, the problem everyone faces is that since there is no backspace button, you can’t cut off the numbers you have entered. Thus, people close the whole app and start all over again. Just swipe on the right or left in the grey area and the last number on the screen will be cut off. Keep doing so till you reach your desired editing requirement. Now that is a good solution to a common problem.