How to Change to a Complex Passcode?

Step 1: Open the Setting App

Step 2:Touch Touch ID & Passcode in the left menu

Step 3: Touch Turn Passcode On

(If you had a numerical passcode you will have to enter it.)

Step 5: Choose Custom Alphanumeric Code

You can use letters, numbers, and symbols. Make sure to remember it!

Step 4: Touch Passcode Options