After upgrading the Samsung Epic 4G (SPH-D700) to Android 2.2 Froyo, did you find that all your synced Android calendar events disappeared? In my case, all the recurring calendar events were missing on the phone, but still appeared when I went to Google Calendar from my browser. Here are two ways to fix it.

Clear the cached calendar data

1. From the Home screen, open the Menu and select Settings.
2. Scroll down and select Applications, then Manage Applications.
3. Select the Calendar Sync application.
4. In the Storage section, click the Clear button.

Now, sync your Android calendar and all the events should come back. If they don’t, try the following fix.

Modify the missing events

If clearing the calendar cache, above, doesn’t work for you, then you can force the Android calendar data to update by modifying the contents of the missing events. Simply edit each event online in Google Calendar by changing the event name or other information about it. After modifying all the desired events, sync the calendar on the phone.

Which fix worked for you? Have another way to fix this problem? Post your findings in the comments.