How do I stop AuthKitUIService from using so much battery on iPhone?

AuthKitUIService is a standard Apple process and those normally do not show up even though they continue to run on your phone. I suspect this is a bug since it is not an app, which is why there is no icon associated with it, other than the default icon when one is not available.

Have you updated to iOS 18.5 yet?

If you still see it after the iOS 18.5 update, you can send feedback to Apple here and under Feedback Type, choose Bug Report.

Feedback - iPhone - Apple

xotwodd wrote:

I've literally had it for about 3 months now.. what if someones hacked into my phone? im also having other apps such as photos app saying that ive been on there for 6 hours when I havent

Nope, no one has hacked into your phone. This same thing has been reported previously. Bug reports are sent to Apple using the feedback link already provided, and you also want to make sure you are not sharing your Screen Time data across other devices by going to Settings > Screen Time > Share Across Devices, and turn the switch off. With the switch turned on, the data from other devices using your Apple Account will be included.

Authkit is a piece of software that developers use for sign in screens and such. If it remains on your screen time, you might want to restart the iPhone to see if the issues persist.

If the issues persist, you might want to force restart it

1. Press and quickly release the volume up button.
2. Press and quickly release the volume down button.
3. Press and hold the side button.
4. When the Apple logo appears, release the side button.

Have you updated to iOS 18.5 that was just released yesterday? If not please do so.

I’ve seen it after updates for a day or two and also when an app wanting user to log in is terminated (swipe up) before the process completes.

In fact you can see mine from yesterday probably related to the update.

It’s nothing to worry about. It’s a default Apple App and nothing to worry about. If you’re concerned please contact Apple Support.

If you’re in the US please call  1-800-MY-APPLE or outside the US, consult the support articles below.

Contact Apple for support and service - Apple Support

Genius Bar Reservation and Apple Support Options - Apple

Official Apple Support

Do you have a lot of tabs open in your browser?

Thanks for the info, I saw it on iOS 18.4, but had not been able to confirm if it still showed with 18.5.

You’re welcome!