Swipe to delete a digit
Our grade-school teachers lied to us when they said we won’t carry calculators in our pockets. Oh, how wrong they were. Your iPhone’s Calculator app is one of the most useful on your phone. Forget about doing math in your head! Just open the app, input the numbers, and voila! Now we can all be sure that 1 + 1 = 2.
But if you input a wrong digit while doing quick math, there’s no need to delete the number entirely. Just tap the screen before or after the wrong digit then hold and swipe in its direction. You can use this neat feature to remove multiple digits if you made multiple mistakes.