What possible citation could be better than the one provided? Apple has sold over 1 billion of these devices and they all share the same lock screen UI; 500,00

What possible citation could be better than the one provided? Apple has sold over 1 billion of these devices and they all share the same lock screen UI; 500,000 search results on Google pales in comparison as a citation. Edit: I understand your point and agree that unlocking a device would not mean exactly the same thing to all people. I just don't agree that the parent needed an additional citation.