Why did my calendar dates disappear?

[iMore Question]

All of my 2015 calendar events have disappeared on my iPhone, and when I try to enter an event on the iPhone calendar, it does not appear; however, the event that I tried to enter on my iPhone, does appear on my iPad calendar. All of my 2015 events are still on my iPad calendar.

 

[Just_Me_D]

Check the sync setting within the Mail, Contacts, Calendar settings.