Almost everyone is crazy about having an iPhone but how many of us completely know its hidden features. So, here are 9 amazing facts of iPhone you never came across! 1. Instead of a four digit number as a passcode, you can use letters to make a passcode. Way to do it- Go to the settings and then select General and click on Passcode Lock. Setting which shows "Simple Passcode", you need to turn it off. After this, a screen will appear with a full QWERTY keyboard where you need to change your passcode. Now, you will see keyboard instead of a number pad when you want to unlock your phone. 2. Get your email read out by SIRI. Ask Siri, “Read my email” and she will be gratified.Furthermore, what you are going to know is the sender’s name, date, time and the subject of an email.