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iOS4 update - now iPhone now reboots during phone call

855473 Views 2,230 Replies Latest reply: Mar 14, 2011 12:05 PM by Jason L RSS
  • Simon Haye Level 1 Level 1 (10 points)
    Evertype wrote:
    Your iPhone's warranty is given by Apple, not the cell provider. Did you ring the number given at ?

    Oh, and by the way, here in Ireland I bought my iPhone from O2, not from Apple.

    I did ring the Belgian support number, and when you press 4 for iphone service - it tells you to call Mobistar, who is a Belgium cell operator, and not one i have my contract with.
    3GS 32GB - which is not a functioning phone due to, iOS 4
  • Evertype Calculating status...
    Does it hang up afterward?

    When I ring Apple, it tells me the for Activation I should call my mobile provider. If I stay on the line, I get a technician.

    I can't offer you any more advice but to try (and succeed) to get through to a human being at Apple and speak to them.
    MacBook Pro 2.8 GHz Intel Core 2 Duo, Mac OS X (10.6.4), 8 GB
  • iAmFromGermany Calculating status...
    I've made a few tests now. The reboot only happens when the signal is weak and the phone is on my ear.

    I didn't have a reboot when the signal is good (4 or 5 signal bars). I also had no reboots with the earphones. The reboot only happens with low signal (3 or less signal bars) and having the phone on my ear. Putting the phone away from the ear so that the display turns on continously dosn't work as well. Still had a reboot after 5 minutes.

    I'm looking forward to what the genius will say on monday.
    iPhone 3 GS, iOS 4.0.1, iOS 4, iMac, iPad, iPod
  • Andrea Fuser Calculating status...
    Update (sorry for my english)

    In the last days, I have no reboot from my iphone. It's very strange, but I deleted some app (20-30) and now it's perfect.
    Now I've 124 apps and only 9 "home screens".
    Best regards.

    iMac & MB, Mac OS X (10.6.4)
  • monsieur sausice Level 1 Level 1 (0 points)
    I think the weak signal is key to the problem as my phone only reboots when the signal is weak.

    My theory is that 4.x turns up the power to the RF amps in weak signal conditions much higher than 3.1.3, so the amps overheat and the phone shuts down. This may be all linked to the new antennae design and some of the code creeping into builds for older antennae, or just part of trying to reduce the number of dropped calls.

    Variability in manufacture means that some phones detect the higher temperatures as a fault and some don't.
    3GS, iOS 4
  • HoopaVez Calculating status...
    I'm glad it's working for you. However when I restored I had absolutely nothing on my iPhone that doesn't come factory installed. No apps multitasking in the background, no apps at all, and I still got the issue.
    iPhone 3GS 32GB, iOS 4
  • abartram Calculating status...
    Hi All, I've been suffering my 3GS rebooting during calls (generally of over 5 minutes) in both ios 4.0 and 4.0.1. Since this doesn't affect all 3GS, I'm wondering if its related to a specific batch. I remember just after the launch of the 3GS in Europe, that a magazine article showed that there were 2 different models of 3GS with FCC certifications, and that the 3G radios inside were different. Is this reboot issue related to just one type of radio (a reference to the article is here Anyway, as a way to identify why some of us are "blessed" with this problem, can you check the FCC ID on the back of the iPhone, and we can see if they are the same - also, anyone getting a replacement 3GS, which doesn't have the problem - see if you're getting a different one, please.

    On the back of my 32GB 3GS it's written Model No. A1303 FCC ID:BCGA1303A IC ID:579C A1303A
    iPhone 3GS, iOS 4
  • tspar Calculating status...
    I think Abartram is onto the cause. In the UK the 3GS came out last July. I got mine in July and it has an FCC ID: BCGA1303A. As i understand it Apple then released a newer version of their bootloader around September time to try and stop the phones being jailbroken. My colleague got his phone in September and his FCC ID is the later one BCGA1303B. He has upgraded to the new OS4 without a single hitch and so have some of his friends. It would be interesting to find out if those who have posted (UK anyway) could back up my findings by checking their FCC ID (Its in small writing on the back of the IPhone).
    IPhone 3GS, iOS 4
  • JonLen Calculating status...
    I was hoping the 4.01 patch would solve this issue - only started happening since I loaded V4.0, same as others have posted just drops out on certain calls then reboots with Apple Logo then requires only password to gain access i.e. I do not need to unlock my sim.

    Apple - This is a great product but we need an answer for this.
    Iphone 3gs, iOS 4, Phone
  • Dave Wild Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 23, 2010 5:24 AM (in response to tspar)
    Already listed my phone way back on page 12.

    But to add to the new direction. I am UK based on O2 and my phone is also FCC ID: BCGA1303A

    maybe as suggested this is why some phones are not having this problem?

    Powerbook 1.67ghz, Mac OS X (10.4.4)
  • Jonty Soper Calculating status...
    Currently Being Moderated
    Jul 23, 2010 5:30 AM (in response to tspar)
    Hi Abartram, Tspar,

    Certainly a good avenue to investigate, although I'm not confident it's going to be a winner. I have a UK flavour BCGA1303B 32GB 3GS which I bought in March this year and it has/had* the rebooting problem since uprading to iOS4 :o(

    * I say has/had because at the beginning of the week I upgraded to 4.0.1. During the upgrade the phone crashed and got stuck in restore mode, so I let the phone rebuild itself. With no data on it, I restored from a backup and since then I've made only 3 calls but each has lasted 15-25 minutes. In addition, I gripped the phone to add heat and I noticed the signal was 1 or 2 bars (using 3G). So, so far so good... but will it continue? Who knows. :o(
    3GS 32GB, iOS 4, iOS4 v4.0.1
  • jolo13 Calculating status...
    Currently Being Moderated
    Jul 23, 2010 5:30 AM (in response to tspar)
    i have the later version 3Gs FCC ID BCGA1303B. and i have the problem..
    iphone, iOS 4
  • Evertype Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 23, 2010 5:37 AM (in response to tspar)
    I got my phone (the one the courier will collect and take away today) in November 2009. Its FCC ID is BCGA1303B, and has the problem.
    MacBook Pro 2.8 GHz Intel Core 2 Duo, Mac OS X (10.6.4), 8 GB
  • blowfelt Calculating status...
    Mine is the newer batch and reboots BCGA1303B Bought it in March

    Never had any issues until I upgraded to iOS4.

    I seem to agree with the bad reception and overheating Amps theory. I've only noticed it since working in a new office which only has 1-2 bars. Approx 5 mins sometimes less and bonk.

    I am sure whatever they have done to combat the dropped calls with no reboot is the reason.

    I bought mine from Tesco as the nearest apple store is 75 miles away. Not sure what to do.

    With all the debacle going on with the Iphone 4 I aint in any hurry to upgrade.

    Apple if your listening remember this is priamary a tool for making and recieving calls and not just an Apps console.

    Hope they fix this soon. I dont really want to downgrade and risk "bricking it"

    PC, iOS 4
  • FatController04 Calculating status...
    Yep I too have this issue and sort of comforted to find this forum as I thought it was just me! My 3GS was fine until I upgraded to OS4, rebooting happens frequently, 4 or 5 times a day, depending on usage. I tend to agree it is will longer call but I have also seen the problem when "idle" connected to a charger in the car.
    Apple - I know that you had some "reported problems" with poor reception on the new iPhone 4. I hope this issue hasn't been caused by winding up the signal strength. Please address this before you damage your reputation further!
    Anyone found a way to reduce the occurance of the issue? (apart from not using the phone - or trading in for another manufacturer...!)
    Thanks, FC
    3GS, iOS 4
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