iPhone users are discovering they’ve been using the calculator app completely wrong

The iPhone's calculator app can be a lifesaver, but it turns out we've been using it wrong all along.

If you're anything like me, then maths isn't your strong point and you'll turn to your reliable iPhone calculator more often than you'd like to admit.

It's a brilliant Apple app and saves your rummaging through your desk drawer for your dusty school calculator.

However, while it's already useful, turns out it could be even more so.

While we can all agree the iPhone's calculator saves us a hell of a lot of time (and stress) of doing mental arithmetic, there is the well known issue of having to delete full calculations from the app when you input a number wrong.

Well, it turns out you don't need to delete the whole thing after all...

Not many people know but you can actually delete numbers individually by simply swiping left or right across the display.

Also, if you're looking to save time while doing your calculations, there's a trick for that too.

You can actually copy your last result without even needing to go into the app. If you've just finished a calculation, and you've headed over to a different app, you can actually copy your last result without even going back into the calculator.

Leeloo The First/Pexels

Simply tap the app, hold down, and an icon will appear with the option to copy your last figure.

While many of us think the iPhone calculator is a simple tool, it's actually got heaps of features. For example, you can also turn the app into a scientific calculator too.

To do this, first ensure that your screen orientation isn't locked, as you'll need to flip your phone lengthways to reveal the scientific buttons.

Once you've checked it's not locked, turn it on its side to access the scientific calculator - which provides exponential, logarithmic, and trigonometric functions.

The scientific calculator even has its own secret functions, too, with more features to be revealed if you simply hit the button that reads '2nd'.

JÉSHOOTS/Pexels

And in a rather quirky feature, the scientific calculator also allows users to randomly generate numbers - which could be useful in a game for example - by hitting the 'Rand' button on the bottom right side.

If you need to switch between the standard calculator and the scientific, you can easily do that too, without losing any of your calculations.

The app will keep hold of any calculations even if you rotate into the other mode, so you won't lose any progress.

Who knew?