IPhone5S Science Calculator How to use? Where is the 5s science calculator?

1 We in the Apple 5s main screen, with the finger from the lower screen to pull up, and then in the open "Control Center" we click on "Turn Screen" then we open the interface and click "Vertical direction lock." (pictured below)

2 into the "add-on" we Click "Calculator" Now you will find that the calculator is still very simple oh.

3 Rotate the mobile phone screen, when your mobile phone display horizontal screen, you will find that the calculator automatically become a "scientific calculator" Oh,