If you don’t lock your iPhone with a passcode, you should stop what you’re doing and do that immediately. But even if you do use a passcode, if it’s a 4- or 6-digit code, then your iPhone is still more vulnerable than it should be.
By far the best option for security is to use an alphanumeric passcode that’s at least seven characters long. The more complex, the better.
That may sound unnecessarily complicated or paranoid, but continue reading to learn five majors reasons why an alphanumeric iPhone password is a good idea.