Hello craigrweston! Sorry to see that you've lost calendar functionality. Can you give me some details on this issue? Had you been using the preloaded calendar app or did you install a custom, third party app? When you've used Calendar, did you access it through a widget or shortcut from the main screen or did you go into Applications? If from a widget or shortcut, please go to Menu> Applications to see if Calendar is still there. If so, you can launch from that location or you can return to the main screen, press and hold and select to add a short cut or widget again.
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