My Calendar has lost all of the dates, times and events that I had inputed and now has nothing.
Hello dear visitor. We are glad you decide to ask us, and I hope we can assist you with this problem. Please tell me which iOS you have installed on your device? This usually happen when you update/upgrade your iOS. It’s not deleted, only it’s not showing on your phone (that’s what I believe). Here is how you can fix this.
Open Settings > Mail, Contacts, Calendar > Find Calendar and choose Sync. There choose All Events. Exit Settings and open Calendar app, choose Calendars and scroll down (pull list down) to refresh it.
Hope this work for you. If not, please get back us some more information so we can help you.