My alarms are going off late after 9.3

I don't know what you mean by "reset". However, the next steps would be to restore your phone from a back up and test. If that failed to resolve the issue, restore as new and test.

I figured I'd add my voice to the chorus.
iOS 11.0.3, iPhone 6. This week my alarm was late twice: 4 minutes late on Monday, 6 minutes late on Wednesday. This is the same repeated weekday alarm that I haven't adjusted in months. Snooze option is off.

My first thought was "must be some weird DST bug", since the clock was adjusted last Sunday. But I couldn't find anything about it online, this thread is the closest I found.
I just did Settings / General / Reset / Reset All Settings, fingers crossed. And, I dusted off and set up my old alarm clock. It's sad that I can't trust my phone anymore :-(

I've been encountering this same issue with my IPhone now for approximately four months. Three software updates, and still no apparent fix.

I've removed/added new alarms, changed alarm tones, shut down and restarted by phone, and have reset my phone as well. Nothing seems to help. My alarm will go off anywhere from 1min to 15 minutes later than intended - it's extremely frustrating.

Judging by the posts here, I've seen no real success at solving the concern from other iPhone owners as well... anyone out there have any luck resolving the issue yet?

I have same problem. The alarm is delayed for 5-10 minutes if the phone screen is off. Typically when I take the phone and there was delayed alarm it starts all to ring in my hand.

It's really funny .. we have 2017, phone costs me more than 1.000$ but it can't ring at right time..

update, or mark this post as solved.

“There other explanation is that there is something wrong with your phone, especially as this problem seems to affect almost no one.”

“Comparatively small number of people" (what I actually said) is not the same as "almost no one".

I also am having this problem and judging by the replies in this thread it seems to be a common issue.

DJ_Hollywood wrote:

I also am having this problem and judging by the replies in this thread it seems to be a common issue.

A thread that, in over a year and half is only three pages long is not indicative of a common issue.

That doesn't mean that you are not having a problem. What it means is that it's unlikely that is caused by a bug in iOS.

What troubleshooting steps have you taken so far?

IOS 11.0.3. Not in an area that observes DST. Alarm goes off late on iPhone 6. It was 6 minutes today. It seems I will have to go to the trouble of packing an authentic working alarm clock.

nest LA wrote:

I am having this same problem after 10.3.3 update and on multiple alarms so yes it is affecting more than almost no one.

"Comparatively small number of people" (what I actually said) is not the same as "almost no one". What it means is, compared to the very huge number of people who own iPhones, the number having problems with their alarm is very small. The number of people having a problem could a thousand and still fit comfortably into that category.

It's also not certain that every alarm issue has the same root cause.

Had the same problem with my 6. Went off 21 minutes late a couple times just in the last 6weeks or so. Got the X for Christmas. Has worked fine for 2 days. Then today had set at 8:30...went off at 10:31!! HELP!!!!

Tap Settings > General > Reset > Reset All Settings

Then restart your iPhone and try an alarm.

* No data is lost due to a reset

Hello,

I am having the same issue since my update to iOS 9.3. Did you find a fix?

For example I set my alarm to go off at 7:20 and it went off at 7:45 the morning just after the update and today it went off at 7:24 (while still being setup to go off at 7:20).

Some people are also having this issue on @AppleSupport twitter feed. I guess there's one again a bug with such a basic feature. My bet on the new Night Shift feature too (I didn't use it by the way nor programmed it).

I am having the same issue. I travel a lot and it is a total bummer that I can't trust my iPhone to be my alarm 😟