iPhone alarms are usually silent and do not vibrate.

Try going into the Health App and into the sleep function and toggling off sleep function. This should fix your day to day alarm.

I’ve tried all the the steps suggested and reset my phone a number of times. The problem seems to be Apple hasn’t fixed anything. There should be no special steps to get a sleep focus alarm to go off and make sound, but here we are. If I have my Apple Watch connected, or even watch notifications silenced and then disconnect the watch the sleep focus alarm will not make sound.

it feels like a timing, or order of operations problem in the software because regular alarms will generally work unless they are timed to go off within the snooze period of another.

Sorry, I think it’s actually the auto-lock you need to shut off.

i guess you’ve read by now that apple has agreed there’s a bug and it’s working on a fix? if not, just google “iphone alarm bug.”

Make sure your display standby settings are turned off. If it is on, your alarm will automatically snooze itself when the display times out. So if you’re a heavy sleeper and don’t hear your alarm within the first 20 seconds or minute, you’ll miss the alarm.

none of this helped. I literally got a new iPhone 15 and the day I had a flight the alarm went off with NO sound and NO vibration… yet the alarm worked the days before????? Had the same issue with old phone. It’s completely random. Is this anyway related to having a watch?? Bc I swear it’s a lot of the times my watch isn’t on and is changing that I don’t get woken up.

This solved the puzzle of why it was getting quieter after 2 seconds when I was testing the alarm (setting it for 1 minute later, then watching it while waiting for it to go off to hear how loud it was—because the new tones are too soft and the song I set would't actually play).

On the iPhone 15 I ended up going to the bottom of the list of tones to select "Classic > " to get the list of classic tones that are abrupt enough to actually wake me up (I'm a very deep sleeper).

Never use an iPhone alarm there unreliable and S*** it’s a gamble whether it will actually go off and when they do good luck stopping them if you hit snooze it works if you hit stop it still f***ing snoozes the amount of times I’ve went into someplace hours after I woke up and it will just randomly start going off I don’t get why they can’t just make a normal f***ing alarm that will go off at the time I set andwhen I stop it it stops forever until I turn it back on if they can’t figure out how snooze works they need to remove it because why the f*** have a stop button that only acts like it’s stopped the alarm

I'm sorry. There seems to be something wrong with your keyboard that's making it very hard to read your post. It sounds, though, as if you're having trouble setting alarms. Start here:

How to set and change alarms on your iPhone - Apple Support

Then, if you're still having trouble, let us know at what point.

Maybe it’s your Bluetooth automatically connecting to something. Otherwise mine is acting strange too.

Go to the "Alarms" app and you'll see the snooze option at the bottom

I have the same issue I drive trucks and often wake up to drive early morning like 1 to 3 am… I’ve had this happen to me twice now I thought I was the only one… was late twice because my alarm made no sound… I often sleep with my wife on the phone I don’t know if that’s the issue but it’s never been a problem before now

At this point, I’m seriously considering giving up on this so-called “new” iPhone 15 and either going back to my iPhone 13 or to an android. I’m not even sure if it’s the phone or the iOS upgrade. This Alarm issue is so irritating and impossible to comprehend for Phone that costs so much money!!!!!

I really should not have to play Russian roulette every time I go to sleep and I have an important event to wake up for, or be an IT specialist just to ensure that my alarm functions the way it should.

This is happening to me a lot as well. I also have an Apple Watch that charges at night and is always on the charger when this seems to happen. I have missed some pretty important stuff a few times because of this. I’m just going to go back to the old school alarm clock. Ridic.

Wow. this is quite ridiculous to be set as default. I think your post just made my hisbands problem of missing alarma crystal clear. He wakes up, looks at it and because he's half asleep and thr darn alarm geta quiet he goes back to sleep confused. Thank you!!!

I’m running into this currently and quite frankly it’s getting my and my family’s nerves my dad isn’t very happy that I’m missing out on the first classes of the day and this is getting a little annoying