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  • Apple Investigating iPhone 3.1 Battery Life Problem

    image via Spaziocellulare News Magazine

    Facing an avalanche of customer complaints about poor battery life in iPhones that are running the 3.1 firmware release, Apple Support has sent a selected group of users a profile enabling a power-logging mode, and has disseminated an 11-item questionnaire, including questions about email use as well as the frequency with which WiFi and Bluetooth are enabled.

    The Battery Life Logging mode apparently writes to the user area of the phone's flash, as the test users are instructed not to sync for a few days while gathering data. They are also asked to disable the mode once the testing is complete, presumably to avoid flash overrun due to the growth of the log files.

    The utility is enabled by an unsigned profile that was sent to a number of users who had reported the issue on Apple's support forum, and is accompanied bu a questionnaire that asks questions like “When you notice a power drop, does it seem to be a legitimate power drop, or rather an issue with the battery icon indicator?”

    An iPhone repair technician interviewed by Computeworld noted that "the processor in the iPhone 3GS can use 50% more power in some situations than its predecessor." Aaron Vronko of Rapid Repair theorized "that Apple missed some key interactions between the iPhone's software and the processor in the last update that causes it to over-utilize the CPU, especially since [the complaints] came after the software update."

    One would hope that a fix, once found, will be incorporated into the release scheduled for September 25 that will enable MMS messaging on all iPhones. Complaints about short battery life began with release 3.0, and reached a crescendo with the current release.
    This article was originally published in forum thread: Apple Investigating iPhone 3.1 Battery Life Problem started by Paul Daniel Ash View original post
    Comments 66 Comments
    1. peck's Avatar
      peck -
      Here is an answer:

      After trying various ways to get a replacement, and only after I replaced the battery of my iphone 2g, I decided that the true culprit in this issue is the apple internal hardware.

      My phone was getting 30 minutes at the most on a full nights charge. Overheating was the issue that prevented the battery from fully charging. So...

      I connected a cheap rheostat to the usb charger and it sat there and alas!

      I saw a Fully Charged Iphone Icon. And not only did it surpass the 30 minutes.... it continued for 4 more hours all while my daughter sporadically used it.

      I looked further and noticed that on Septeber 20-08, a product recall was issued for the usb power supply- - for 'faulty prongs' (yet no case of faulty prongs were reported to cause injury or damage btw).

      Was it then a circuitry change if the problem of overheating was resolved?

      After presenting my findings to apple, they wouldn't even offer me a charger to replace this Proven faulty one.

      p.s. usb computer connection still overheats the unit.
    1. law111's Avatar
      law111 -
      Quote Originally Posted by onebad7 View Post
      i say complain to apple lets make them let us downgrade :
      Yea, that's dumb, they're making us iPhone 3GS users STUCK with a bad firmware.. we should be allowed to downgrade if we don't like the current firmware or if it causes problems..
    1. vvilliamm's Avatar
      vvilliamm -
      lol this is my rule of thumb dont upgrade to any firmware or going through all that trouble unless it provides more features example when they had copy and paste
    1. tentacle's Avatar
      tentacle -
      Quote Originally Posted by Mista Brothason View Post
      I deleted all the lil daemons running in the background and my battery is great running a full theme too with many mobilesubstrate plugins
      How do I go about killing the daemons running? I installed TOP to see what is running but didn't notice anything or more like I didn't understand most of the processes that were running.
      My battery is horrible and I'm still on 3.0 I have it on the default brightness as it came shipped as and 3G is disabled, yet it still gets down to less than 10 percent after about 4-5 hours, and thats only making maybe 1-3 calls, couple texts, checking email couple times. my 2G could go 11+ hours before it got down to 10% and that was using it heavily plus the fact it was 2 years old and likely somewhat worn battery.
    1. engineer_pisey's Avatar
      engineer_pisey -
      mine is fine
    1. g0sbv's Avatar
      g0sbv -
      Two NHS mobile equipment specialists have said that the short battery life of Apple's iPhone makes it unsuitable for use in health work

      Paul Curley, clinical director of IT and consultant surgeon for Mid-Yorkshire Hospitals NHS Trust, said that his organisation's tests had found that personal digital assistants were viable for use within hospitals, but that performances varied.

      "With the BlackBerry, the battery life is superb. With the iPhone, it's rubbish," he said.

      Tracy Andrew, head of information security and compliance for Berkshire Shared Services, made a similar comment about its tests of mobile devices for use in the community. "We have two iPhones on trial, and the first complaint is that the battery doesn't last a day," he said.

      The two were speaking at the SmartHealthcare.com Mobile and Wireless Healthcare event in Birmingham on 24 February 2010.

      Curley said it was more difficult to find a mobile device to work in a hospital than in the community, as it would generally have to connect to numerous software packages and handle high-resolution images of scans. When scans will be used for clinical diagnosis, "the smaller your screen resolution, the less safe it is," he claimed.

      He said the trust has trailed Sony PSP mobile devices, with no keyboard but a good screen. It was possible to type using the screen, but the devices worked badly when they did not have connectivity.

      The trust is currently building two new hospitals through the private finance initiative, at Pontefract and Wakefield, both of which will have wireless access throughout. However, existing hospitals, including Curley's, tend to have wireless available in just some areas, such as wards, offices and theatres.

      "We have a very limited wireless environment," he said, and devices have to be able to cope with that.

      Curley said the ideal mobile device for use in hospitals would need to allow for a "hot swap" of batteries, without the device closing while these were changed, session persistance and fast log-in and connection. It would also be "ultra portable", have a good battery life, not get too hot while in use and be "cheapish".

      The aim was "bedside, non-wired access to all relevant information," he said.