You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
After updating my iPhone 15 Plus to iOS 18, the calendar app can’t stop working in the background. I have:
Not sure what else to do. Please help.
iPhone 15 Plus, iOS 18
I use my phone for work. I ended up removing my accounts from the Mail and the Calendar app. Since I use Outlook and Office for work, I am now using the Outlook app as both my mail and calendar app, I have not had any problems ever since.
I tried removing and reading my Watch, that didn’t work.
I use my phone for work. I ended up removing my accounts from the Mail and the Calendar app. Since I use Outlook and Office for work, I am now using the Outlook app as both my mail and calendar app, I have not had any problems ever since.
I tried removing and reading my Watch, that didn’t work.
The hang/CPU utilization was so bad for me I’ve been unable to remove the Exchange account. Charging also stopped due to overheating. Calendar even hung when simply tapping OK to acknowledge notification of an expected appointment.
Same here. Battery drain 5 hours and 43 mins of the calendar running in the background. Have also upgraded to 16 pro max. Calendar also gets hung up when I try to add or change entries. It’s maddening.
Just installed iOS 18.0.1 but the issue remains.
With my iPhone 15 on ios 18.0.1, I have the same problem with the calendar app draining my battery so fast. There is no option to stop the calendar app to be used in the background in settings!
Same here. Calendar app is using 98% of my battery daily, but its not actually getting updated with current info from exchange. Appointments and alerts are not appearing on phone as a result and getting missed.
I have been having the same issue, and I wanted to come on here to offer what (hopefully) worked for me. After looking around online and finding people who had similar issues in the past with other updates, I found a few posts to do with the calendar backup activity that were solved by unpairing your watch and pairing it again (I upgraded from a version 6 watch to a version 10 which is why I had to upgrade to ios 18). I know that sounds unrelated, but I have been willing to try almost anything since my battery was down to 30% by 9am the past 2 mornings with very limited usage. Almost all was calendar background activity. This morning, I unpaired my watch and paired it again. Right now it is 11:25 am and my battery is at 88%--I charge to 95%. If it doesn't hold out, I will respond to update. I hope this helps someone!
Calendar app of iPhone 15 Plus on iOS 18 draining battery
