From the home screen, swipe down from the status bar. Note: The device will automatically attempt to set the date and time from the network. This tutorial demonstrates how to manually set the date and time on your device.
Scroll to, then tap Date and Time.
Tap the Set Date and Time Automatically switch to toggle on or off.
Tap the Date field.
Swipe the fields up and down to set the desired date.
Tap the Time field.
Swipe the fields up and down to set the desired time.