Apple iPhone (For iOS 6.1) - Manual (Page 89)

Chapter 18 Reminders 89
Turn off reminder notifications: Go to Settings > Notifications. For information, see Do Not
Disturb and Notifications on page 132.
Set the tone played for notifications: Go to Settings > Sounds.
Keep your reminders up to date on other devices: Go to Settings > iCloud, then turn on
Reminders. To keep up to date with Reminders on OS X Mountain Lion, turn on iCloud on
your Mac, too. Some other types of accounts, such as Exchange, also support Reminders. Go to
Settings > Mail, Contacts, Calendars and turn on Reminders for the accounts you want to use.
Set a default list for new reminders: Go to Settings > Mail, Contacts, Calendars, then under
Reminders, tap Default List.