Alongside nearly 20 other built-in apps – from Apple Maps to Siri to FaceTime – the iPhone 5 includes Apple’s Calculator application right out of the box. When you hold your iPhone vertically, in a position known as “profile mode,” you may notice that it lacks a button for inputting fractions. Switching to landscape mode, on the other hand, essentially turns your iPhone into a scientific calculator, revealing a fraction key and other new functions. Warnings Writer Bio
