iPhone 4 clock bug

can anyone explain??

20 messages
02/11/2010 at 11:12

I'm having a heated debate over on F***book....

MY phone (which is not an iPhone) updated its clock during the night when they went back, correctly, and then woke me an hour EARLY on Sunday

There is a story in the paper about iPhone users saying their phones woke them an hour LATE after the clock change.... I don't get it? Surely, as the clocks went back, if it handled it wrongly, it'd wake you an hour EARLY, just as my phone did?

Can anyone explain how this works?

02/11/2010 at 11:22

I mean....

If the user sets their alarm for 8am (as I did) wanting to be woken at 8, it either stores that as "08:00", or as "08:00 BST".

The the clocks automatically go back during the night, and the newpaper comfirmed that the iphones did this (and so did my phone).

So if it stored the alarm time as "08:00" it would wake me when the clock says "08:00" which is what I wanted.

If it stores it as "08:00 BST", then the next morning, the clocks have gone back to GMT, so the clock says "07:00" when it wakes me at 0800 BST, which is an hour EARLIER than I wanted.

How could the iphone be waking people up LATE?

02/11/2010 at 11:22
Just me then....
02/11/2010 at 11:37
you need to get out more
02/11/2010 at 11:41
Had a look on various forums, half the iphone users are claiming it woke them up early, the others say late... I think the "late" people are just making it up
02/11/2010 at 11:42
I just find it interesting that I haven't seen a coherent explanation in any of the newspapers, they just parrot the story from each other
02/11/2010 at 12:30

Mike - I have an i-phone, and this morning my alarm went off an hour late - I have no idea how or why it happened, Monday morning was fine.  I checked my phone this morning, the time is correct, my alarm was set for 7.30, yet it went off at 8.30?  I am totally baffled.  I'm just gonna restart it and set a second alarm just in case!

 I get what you are saying about how it should have woken me an hour earlier, but I promise you I'm not making it up! 

02/11/2010 at 12:33
 No, no, I'm just teasing about the "making it up", but as a software person, I find it very hard to see how it can wake people up late  - - - my phone woke me up EARLY - - - and I'm baffled also that there is no reasonable explanation in the papers.
02/11/2010 at 12:36

Well i'm as far removed from a software person as I can get, but I'll be following this thread to see if anyone can find an explanation!  I just thought I was going mad!

02/11/2010 at 12:37
Where's Mava?
02/11/2010 at 17:09

Perhaps the iphone software was incorrectly overcompensating?

02/11/2010 at 17:11
looks like it
cougie    pirate
02/11/2010 at 17:38

I think the clock part was working fine and displaying OK - but the alarm bit was a seperate function/subroutine/whatever and thats what went wrong ? 

And it was only a certain OS version as well.  Whatever happened to the simple times of wind up alarm clocks eh ?

02/11/2010 at 20:50
That's what I have - an old-fashioned wind-up alarm clock with big bells on top. It stands on the other side of the bedroom on an old metal dinner plate. Bloody thing sounds like a fire alarm but it works
02/11/2010 at 20:59
combo of phone (not an iphone, but a 2003 Nokia) and digital radio tuned to Radio 4 wakes me up, usually out of bed by the update on the previous days parliament at about 6:45
04/11/2010 at 11:51
Info on the DST alarm bug here:

04/11/2010 at 13:01

It says "Although Apple does not elucidate on the reasons, the bug is thought to occur because the alarms are set relative GMT, and fail to account for the local time changing"

and as I said, if the alarm was set in GMT, then it would wake them up an hour early

whereas people have said it actually woke them late

05/11/2010 at 11:29
See this problem made it onto Watchdog last night.

Apple are to release a software update to sort it out soon
22/05/2012 at 13:34

today i wake up an hour late due to alarm...

22/05/2012 at 16:40

Errr... more like 18 months late?

I just love ironic spam.


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