I'm an early riser and often use my Mac in another room while my wife is still asleep. My iPhone is plugged in in the bedroom, so I have my iPhone set to Do Not Disturb. That way, if my activity prompts any notifications—for example, verification codes over SMS—she isn't woken up. I recently discovered that if I log onto to iCloud, prompting a two-factor authentication code to be pushed to all of my devices, my iPhone vibrates even if it is on Do Not Disturb. Is this intentional? Any way to prevent this, short of turning off my phone at night? If it is intentional, I can't figure out the reasoning behind it. Why are these notifications in a different category when everything else is silenced? I prompted the notification (one hopes) so there's no greater need to make sure I know about it than other kinds of notifications.