Your smartphone is a computer. And it has access to various pieces of data that should be considered private or protected. So what kind of password are you using to protect access to your smartphone? Are you even using a password?
Daniel Amitay, an iPhone developer, did some casual research on what the common iPhone passcodes likely are. Similar to the most common password lists, the results show that most people choose insecure, or easily guessable passcodes.
Out of 204,508 recorded passcodes, the top ten most common were: