iPhone 8 Calendar suddenly eating battery

[srasband]

Hi, I don't know what changed but as of yesterday the battery usage for my Calendar app is 70%. I have followed all the instructions, turned off background refresh, made sure nothing is updating to my calendar, only have one mail account, no push notifications, but still 70%, oh and I restarted it. Don't know where to look or what else to try. The phone is warm as well.

 

[Helmsley]

Hi, I don't know what changed but as of yesterday the battery usage for my Calendar app is 70%. I have followed all the instructions, turned off background refresh, made sure nothing is updating to my calendar, only have one mail account, no push notifications, but still 70%, oh and I restarted it. Don't know where to look or what else to try. The phone is warm as well.

Try this;

Settings > Tap your account (right at the top) > iCloud > Calendars (toggle it off)

Also, check if any apps are accessing Calendars;

Settings > Privacy > Calendars

Let us know what happens.