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iPhone alarm is silent randomly

Hi everyone,

Since a few weeks it happens that my alarm clock doesn't come on with sound every time. When I wake up and set it just for checking, it rings again. It happened about 5 times, one time I woke up while it was alerting, but only the screen showed the alarm.

I really depend on this alarm clock but I can not trust it anymore :-( what to do?




[Re-Titled by Moderator]

Posted on Jul 12, 2017 11:20 PM

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Question marked as Top-ranking reply

Posted on Nov 29, 2017 10:57 AM

I've actually watched the alarm go off but it did not vibrate NOR sound. The thing is, I have set like 5 alarms for the AM. It is weird considering that some alarms actually do sound, but one or two do not.


I've read the suggestions:


Confirmed: Do Not Disturb is NOT on

Confirmed: Not connected to any bluetooth device

Confirmed: Each alarms is set to sound

318 replies

Oct 22, 2019 5:14 AM in response to jameshd1101

1) ALL - anyone on the Iphone 11 pro - go to FACE ID and passcode - turn OFF ATTENTION AWARE FEATURES - this casues HLAF the problem. Look in to what that is, amuse yourself that dev put it THERE, then turn it OFF. W T F!


2) There is a serious issue here beyond that, as the alarms are all different lengths in my phone - toggle between them when you test, and that may help you. Some are "long" some ring once. Try the long ones, which ALSO may change, but for now, try this.





Oct 22, 2019 2:27 PM in response to kjsnow25

1) Yes, the "Attention Aware" setting will drastically lower the sound volume level of a currently ringing alarm, simply by looking at the display and having your face recognized. This can be annoying, or it can be convenient, depending on your needs.


2) Yes, the "Attention Aware" feature has nothing to do with the silent-alarm problem, which has been around for years.

Oct 26, 2019 8:24 PM in response to kjsnow25

@kjsnow25 Thank you very much for this post. I had been struggling for hours trying to "fix" this issue on my wife's and my new 11pro's, going through 7 step and 10 step processes to no avail. I could not figure out the purpose of the Attention Aware setting, but if you (or @douglas2010) would like to try to explain it I'm all ears, but I doubt I will be turning it back on! Thanks again! We never had this problem with my 5S or her 6Plus, but it was time and we will adjust.

Nov 20, 2019 8:12 AM in response to janafromstolberg

I have an iPhone 11 Pro Max currently on ios13.2.2 and I noticed that my alarm is not effected by the volume settings at all. All of my volume settings are set to max and whenever the alarm goes off it can’t be heard. I’ve been playing around with it for about 20min now, resetting it over and over and each alarm it is still almost silent. I went to the do not disturb and silents options but non have any effect on how loud my alarm sounds.

Nov 20, 2019 5:09 PM in response to JS656

JS656, When you go into the main "Settings", scroll down until you find "Sounds and Haptics" and select that menu, then look for "RINGER AND ALERTS", and see if your volume scroller is set for maximum sound, or set for mute. That sound level is separate from your main sound levels. And if you don't want the volume buttons to alter your Alert Volume settings, then make sure the "Change with Buttons" is turned off.

Nov 21, 2019 7:19 AM in response to douglas2010

I’ve done that. Definitely not a volume issue. It happens with certain apps too. If I’m relaxing with my Pluto app open (for some background noise) with an alarm set, the alarm only sounds once and it’s very quiet, almost as if I’m looking at the phone, but I’ve turned off the “look for face” thing (where the alarm sounds quietly if you’re looking at the phone) and I always have the screen turned away from me anyway.


ive also noticed the phone won’t go to screen lock if I’m in particular apps as well (my Roku remote control app, fb, etc) no matter how much time has passed.

Nov 21, 2019 5:09 PM in response to Lala2731

Lala2731, yes I was responding to a specific question asked by JS656. You are right, the "Silent Alarm" problem does still happen. I use several streaming video apps (with sound too, obviously), and some of them have no problem letting the Alarm sound interrupt them when an iPhone alarm goes off, but others seem to suppress the Alarm audio and just keep streaming their own video and audio, while Apple silently displays the alarm on the screen. I'm not too bothered by these competing sound conflicts, since I bought a physical alarm clock just to be safe. But the most annoying "Silent Alarm" problem is when there is nothing else happening on the iPhone, no apps playing, and yet the alarm just displays on screen without making any noise.

Nov 22, 2019 1:47 PM in response to douglas2010

Lol sorry I know I got a little excited and thought you might have another idea of how to fix it. I often use the alarm on my lunch break, and I like using video apps bc the sound creates white noise while I’m relaxing at lunch. A few times, though, I missed the alarm and went over on my break, and I don’t have a physical/dedicated alarm at work. But I shouldn’t have to have one - when you spend $700 on something you just want it to work lol. Especially something as simple as an alarm. Very frustrating.

Jan 12, 2020 7:59 PM in response to janafromstolberg

It is now 2020 and this issue is still not fixed. My alarm randomly does not go off. I’ve woken up and seen it on the screen as it should be making a sound. But no. My volume is up. Not on silent. Not on DND. I have purposely checked it the night before and it still happened. I had to go and buy a small alarm clock. But seriously Apple! This is a big doozy. It MUST BE FIXED.

Jan 12, 2020 8:20 PM in response to Blee238

The Silent Alarm problem is definitely a real bug. Supposedly, it only occurs in a relatively small number of iPhones. Unless Apple has covert members reading and posting on this thread, the company does NOT monitor anything that is being said here, so this is a very ineffective place to complain about the problem. I myself have bought two small alarm clocks that work well, and I also downloaded an app called "Alarm Clock For Me" that I use on my iPhone instead of trusting the Apple alarm.

iPhone alarm is silent randomly

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