An electronic device configures the electronic device to operate in a first mode, when the current time is with a first scheduled sleep time period, and user input selecting an affordance using a first input mechanism is disabled in the first mode. While in the first mode, detecting first user input. The electronic device transitions the electronic device into a second mode different from the first mode if the first user input meets predefined criteria, and remains in the first mode and forgoes transitioning to the second mode if the first user input does not meet the predefined criteria.