13. The method of claim 1 , including: while the device is locked, preventing the device from performing a predefined set of actions and; while the device is unlocked, allowing the device to perform at least some actions in the predefined set of actions.
1. A method, comprising: at a portable multifunction device with a touch screen display: receiving a calendar invitation, from a party to a user of the device, while the device is locked; displaying at least a portion of the calendar invitation on the touch screen display while the device remains locked; and in response to detecting a user request to view the calendar invitation, immediately displaying the calendar invitation in a calendar application.