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The 'iPhone' Calculator Has A Trick You May Not Know About!

It's pretty sad that you can have an iPhone for years and still not no about every feature. If you have ever used your calculator app on your phone, you may sometimes hit the wrong number while doing your math and then you have to do the math all over again.

Apparently (and this is something I did not know) if you swipe left or right on the number you type in, it will delete the last number you typed in.