Level 1 (4 points)

Alarm triggered shortcuts time out during timer operations

I have been using shortcut to slowly turn on the lights in the morning and to heat the bathroom for 20 minutes. The shortcuts are triggered by specific alarms.

Around the time I updated to iOS 27, they started to time out during timer operations. I get a notification that it timed out:

The lights shortcut consists of several 60s timers and one 120s timer in between. It timed out during the 120s timer. I replaced it with two 60s times.

Now it times out at the second of those 2x60s timers.

The heating shortcut only has one 1200s timer which times out.

I usually ignore the lights shortcut time out because I am still asleep or just woke up and at least very dimmed lights are on.

But after the heating shortcut times out, I open the shortcut app and start it manually. Now it doesn’t time out!

So it seems to be a problem with running in the background when triggered by an alarm.

Usually my phone is plugged in during the night and low power mode is off.

iPhone 13 mini in iOS 27.0.1

Posted on Nov 1, 2026 10:11 PM

3 replies

Alancito

Level 7 (31,566 points)

Nov 2, 2026 9:32 AM in response to letternumber_-

78% max capacity is not healthy and is almost certainly the reason for that problem.

Yes, a weak battery will still be adequate for most functions which don't demand consistent, sustained power.

But plugged in and >80% charged won't help your shortcut's sustained draw on that failing battery. (If it were to help, nobody would ever need to replace their weak battery!)

Apple suggests having the battery replaced at around 80% max capacity – so have the weak, aging battery replaced and all will (probably) be well:

iPhone Battery Service

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

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Alancito

Level 7 (31,566 points)

Nov 2, 2026 4:20 AM in response to letternumber_-

letternumber_- wrote: "...Around the time I updated to iOS 27, they started to time out..."

Your iPhone 13 mini could be 5 years old and the long process of applying a major iOS upgrade to an iPhone with a weak, aging battery can be the proverbial "straw that broke the camel's back." So...

Does your iPhone 13 mini still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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letternumber_- Author

Level 1 (4 points)

Nov 2, 2026 9:00 AM in response to Alancito

Yes, it does. Battery has a maximum capacity of 78 %.

Those shortcuts only run in mornings when the battery is >80% charged and plugged in.

What do you mean by “long process of applying a major iOS upgrade to an iPhone”? The update finished 1-2 weeks ago and I’ve been using my phone since.

Originally posted at discussions.apple.com/thread/256387307