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New iPhone4s randomly shut off...

3364 Views 7 Replies Latest reply: Apr 16, 2012 12:31 AM by Cccf42 RSS
ChineseRamen Calculating status...
Currently Being Moderated
Apr 13, 2012 10:34 PM

Hello everyone,


I purchased a new 16gb AT&T iPhone4s a few days ago and today when I went to use my phone I noticed it had turned off by itself.  The only way I was able to power it back on was to hold the home and power buttons at the same time.  I did a lot of research on the problem and saw that if the Diagnostics had a panic.plist that there are hardware errors or failures involved.


So I looked at my diagnostics and can confirm there are two logs with the panic.plist header.  panic(cpu 0 caller 0x8007617c):lck_mtx)lock():mutex (0x9B5A2820): 0x000080000.  The phone came preinstalled with OS 5.1.


So I am here to ask if this is a case where I have no choice but to replace my phone...  From everything I've read it seems to be the case, but I've only had the phone for a few days and would be really upset if this were the case.  I gave Apple a call and they said to basically not worry about it unless it happens again...  but after doing the research it has just got me more worried.


If anyone could give me any input it would be much appreciated,



iPhone 4S, iOS 5.1
  • danallen90 Calculating status...
    Currently Being Moderated
    Apr 14, 2012 1:59 AM (in response to ChineseRamen)

    ChineseRamen, thank you very much for your comment my phone did the exact same thing. After reading your instructions I was able to turn my phone back on! Although I'm afraid I can't help with your more technical questions.


    Thanks again!

  • Mick.roebuck Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 15, 2012 2:44 AM (in response to ChineseRamen)

    I have iPhone 4 not 4s and this has been happening to me for several weeks now - there is ALWAYS plenty charge in the battery sometimes 75% or more!!!!

  • Cccf42 Calculating status...
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    Apr 15, 2012 10:05 AM (in response to ChineseRamen)

    I have been having this issue with my iPhone 4s too :( it started powering off and on earlier I the week then midweek it powered off, stuck in apple logo and would not turn on, even with holding sleep and home button. I plugged it into pc to restore and this took numerous attempts, eventually it restored. But unfortunately the problem still existed :(


    I rang apple and they are replacing the phone, she said it sounded like a hardware issue as the resorting didn't work. I didn't realise about the diagnostic files when this first happened so I didn't check them. However, on my pc during restore it left a file in the apple mobile device folder (or similar folder can't remember the exact one) "2012-04-13-152818.panic.crash" is this the same thing?


    I my phone still powers off every few mins and I have checked the files after and the are called reset and have the following error:


    Incident Identifier: AA8C52EF-5C4E-4359-B9A2-C9C62FDFD8A2

    CrashReporter Key:   4538d6b1cb35c55e3172dfbde93ab50b3e85ef4f

    Date: 2012-04-15 15:04:18 +0100

    Reset count: 0

    Boot failure count: 1

    Boot faults: wdog

    Boot stage: 80

    Boot app: 0


    The error goes no further than that, anyone any input on this error?


    Thanks :)

  • Cccf42 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 16, 2012 12:31 AM (in response to ChineseRamen)

    I never checked the files when it initially happened so only files in diagnostics are since restore. There are no apps installed at the moment and it switches off even when not using it :(


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