my iphone calandar has stopped

Hi Ewac6986, We appreciate you reaching out to us. We understand that you are experiencing issues with your Calendar.

What happens when you launch the Calendar app?

Are you receiving an error message?

Did you change Apple IDs?

Did you make any changes on any of your mail accounts?

Since we have limited details to work with, let’s start by making sure that your device is up to date.

While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues. 

Kindly secure a backup and update.

How to back up your iPhone, iPad, and iPod touch

Update your iPhone, iPad, or iPod touch

Take care!