Reminders lets you keep track of all the things you need to do.
See reminder details: Tap a reminder. You can:•
•Change or delete it
Set a due date
Set a priority
Move it to a different list
Reminders can alert you when you arrive at or leave a location.
Add a location alert: While entering a reminder, tap
To use a different location, tap your current location. Locations in the list include addresses from your personal info card in Contacts, such as the home and work addresses you’ve added. To use a different address, tap Enter an Address.
Note: Location reminders are not available on iPhone 3GS. You cannot set locations for reminders in Microsoft Exchange and Outlook accounts.
Search your reminders: Tap
Turn off reminder notifications: Go to Settings > Notifications.
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.