Passcode is one of the most essential features for any person who uses smart device. All of us have some or the other confidential data stored on our iPhone or iPad. Apart from confidential data, we might not want kids to play games or watch movies all the time.
Passcode comes into action in any of the above situations; control or prevent your data from theft by setting a strong passcode that is not easily predictable.
By default, the iOS 9 features a six digit numeric passcode; that can be changed to either four digits numeric or alphanumeric.
How to Set Alphanumeric Passcode on iPhone and iPad in iOS 9
Step #1. Tap on Settings → Tap on Touch ID and Passcode.
Step #2. If you have already set a Passcode, you'll be asked to enter it for going further. Enter the passcode to explore further options. If you have not set any passcode, you'll be asked to create a new one before you can choose other options.
Step #3. Tap on “Change Passcode”.
Step #4. After tapping “Change Passcode”, you'll be asked again to enter your old passcode; enter it.
Step #5. You will see “Passcode Options” right above the numeric keypad; tap on that.
Step #6. There will be three options to choose; “Custom Alphanumeric Code”, “Custom Numeric Code”, and “4 Digit Numeric Code”, tap on “Custom Alphanumeric Code” and you will notice your keyboard will change from numeric to regular keyboard.
Step #7. Enter your new alphanumeric passcode and tap Next in top-right corner, and you will be asked to enter the new alphanumeric passcode again to confirm, tap on Done from top-right corner.
So, that's how you can set alphanumeric passcode on your iDevice.
If you are running iOS 9 on your iDevice, by default it will ask you to enter six digit passcode. But, you can still stick to 4 digits.
How to Switch Between 4/6 Digit Passcode on iPhone or iPad Running iOS 9
To switch between four and six digits passcode please follow the first five steps mentioned above.
Step #6. Tap on 4-digits Numeric Code.
Step #7. Enter your passcode twice when prompted.
Watch out this video to secure your iPhone with Alphanumeric Passcode:
Be sure to remember your passcode, else there will be no turning back except to restore your iPhone. A word of advice: keep your passcode that you can easily remember but not too predictable to others, particularly while you are creating Alphanumeric passcode.