How do I restore missing appointments after Yahoo calendar becomes primary on iPhone?

Chrisa62 wrote:

I seems like the yahoo calendar has become primary and my appointments are gone My calendar asked me to enter my Yahoo password into settings. When I did the majority of my appointments are now missing.When I open the caqlnar app and select calendars, it no longer says "on my iphone." Now i comes up with Yahoo

[Re-Titled by Moderator]

What were you syncing too before yahoo?

Re-add that account and enable calendar.