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Screen stays dark when alarm goes off in the morning

When I use my iPhone 5 with iOS 9 as my alarm clock to wake me up (iOS clock app), the alarm sounds, but the screen does not light up. This means I have to fumble around in the dark to turn off my alarm. I have found that if I set a different alarm (a minute or two after the original alarm sounds, or an alarm during the day) the screen lights. A new alarm at a different time, if it is the alarm that wakes me, does the same thing where the alarm sounds and the screen stays black.

Is there some deep-sleep function that automatically turns on?

By the way, I have Do Not Disturb on at night, and is still on when the alarm goes off.

Does anyone else have any issues like this with iOS 9? It never did this on previous versions of iOS.

iPhone 5, iOS 7.1.1, A1428

Posted on Sep 23, 2015 5:33 AM

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104 replies

Nov 23, 2015 10:52 AM in response to mattm754

I have now noticed three issues with the alarm:


1). The alarm sounds and the screen lights up for a few seconds, then goes black while the alarm is still sounding (like others have reported).


2). The alarm sounds and the screen does not light up at all.


(I cannot figure out any rhyme or reason as to which one of the above will occur. Sometimes the alarm sounds and the screen lights up normally).


3). When the alarm sounds and the screen is black, if I press the home button with a finger that is NOT a Touch ID finger (to try to get the screen to light up but not shut off the alarm), the alarm SHUTS OFF. This has happened to me twice, causing me to shut off the alarm when I did not want to shut it off. Thankfully, I always set another iPhone alarm and a regular old clock radio alarm as backups.


I'm not sure what happens if I press the home button with a Touch ID finger.

Dec 22, 2015 7:55 AM in response to gadgetto

Same for me - until this morning. :-/


Today, alarm went off, screen was dark - and swiping the dark screen did not cancel the alarm (like it did previously). Had to press the Home button, then swipe the screen to cancel it.


This is the first time I've had an issue with the alarm since 9.2


Let's hope it was a fluke. Curious to hear if any others see any intermittent issues.

Jan 20, 2016 4:16 AM in response to mattm754

Android user here who's testing an iPhone out. My 6s didn't light up the screen when the alarm went off yesterday morning. This morning the screen did light on for about 3 seconds with the alarm but I didn't hit it in time so it kept ringing but the screen turned off. Is that normal for iphones? For the screen to turn off after a few seconds while the alarm keeps playing? Is this issue "fixed" for me with 9.2.1?

Jan 20, 2016 4:51 AM in response to ksc6000

I believe that users who are experiencing that the screen is still "off" on an iPhone 6 or 6s with Firmware 9.2.1 are (no offense) sleeping through their alarm cycle.


I think the issue here is that the screen does indeed "light up" properly, for each alarm but then it goes dark based on the user's preferred screen timeout preference. (Or perhaps alarm cycles have their own baked-in timeout, maybe a minute or so?)


I haven't had any issue with the alarm not lighting up since I updated to 9.2 and since upgrading to an iPhone 6s.


As a test, try, before going to bed, putting your screen auto-lock settings to "never", try to get up the second your hear your alarm and watch it for a good 2-3 minutes to see what the results are.

Screen stays dark when alarm goes off in the morning

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