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  1. #1

    Join Date
    Oct 2010
    Location
    Melbourne
    Posts
    82

    Default iPhone 4 runs extremely hot with extremely short battery life

    Over the past week my iPhone 4 has been getting hot while idle, even more so in use and becomes uncomfortable to hold whilst charging. The battery lasts about 4 hours. For example, I charged my phone overnight (using the iPad charger), woke up and used it for 30 minutes. On the drive to work I noticed it was now at 70%. So, I charged it on a computer from 9AM-5PM at work and, by 5PM it dropped to 40% (charging all day)! After reading a couple emails, a few iMessages and a 2 minute phone call, it was at 20% by 5.30PM.

    Now, I know it probably sounds like defective hardware, and I'm about to try iOS 5.0.1 with it's apparent battery fixes, but has anyone experienced this before? I can't find anything on Google and I think the damage done to the battery from this constant, excessive heat will have shortened the battery life significantly.

  2. #2

    Join Date
    Oct 2011
    Posts
    58

    Default

    Is this a 4 or a 4S? Some 4S owners have experienced symptoms like this. Basically, when it's running hot the cpu is working hard, which means your battery will be draining.

    See if 5.01 makes a decent improvement and let us know.

  3. #3

    Join Date
    Oct 2010
    Location
    Melbourne
    Posts
    82

    Default

    Not a 4S, it's an iPhone 4. I updated to iOS 5.0.1, charged it up to 30% and listened to one album with the screen off before the battery drained to empty. It hasn't fixed it, so I'll have to take it to an Apple store. Just such an odd bug you know? I'm surprised I couldn't find similar stories with the iPhone 4 (not 4S).

  4. #4

    Join Date
    Nov 2006
    Location
    Canberra, ACT
    Posts
    222

    Default

    Quote Originally Posted by adktz View Post
    I'm surprised I couldn't find similar stories with the iPhone 4 (not 4S).
    How did you go? I am interested in your progress as, over the last week or so (possibly since around the time I updated to 5.0.1) my iPhone 4 has been running hot, and getting very hot while charging (not so hot as to drop, but certainly unpleasant).Today it did not want to charge through my computer's USB port and had to be connected directly to a power point. I am more than a little concerned.
    Catbert6
    MacBook Air, MacBook Pro / iPad 2, 3, 4 / iPhone 4, 4S, 5 / "Frankenmac" with Intel Core i7 2600K @ 4.0 Ghz, Gigabyte Radeon 6870 and Mac OS 10.8.4

  5. #5

    Join Date
    Oct 2010
    Location
    Melbourne
    Posts
    82

    Default

    It turned out to be a software problem, as in, it fixed itself without hardware replacement. Unfortunatly I have no idea what actually fixed it, so it's very difficult for me ohelp you, but it may be worth letting the iPhone's battery drain entirely and then charge it back up again, as it fixed itself around the time I let that happen.

  6. #6

    Join Date
    Jan 2005
    Location
    Melbourne
    Posts
    321

    Default

    My boss has had 3 phones replaced (iPhone 4 not S) because of a similar problem, basically getting really warm and battery draining 50% in a couple of hours.

  7. #7

    Join Date
    Feb 2004
    Location
    Sydney, NSW, Australia
    Posts
    1,069

    Default

    For others, if iOS5.0.1 doesn't fix this, do the following...
    First, go Settings, Reset, and reset Network Settings.
    If that doesn't fix it, delete all your mail accounts and re-set them up. That will fix it.
    2012 Mac Mini 2.6 w/ 1TB Fusion Drive & 16GB RAM, Dell U2713HM Monitor | 15" MBP Unibody 2.66 | iPhone 5s Space Gray 32GB on Vodafone & iPhone 5 Black | iPad Retina (3rd Gen) on Vodafone | AppleTV 3 | Original Airport Express

  8. #8

    Join Date
    Aug 2008
    Location
    Brisbane
    Posts
    192

    Default

    I've had the same issue and Apple were happy to do an out-of-warranty replacement because of the potential safety hazard.

  9. #9

    Join Date
    Nov 2006
    Location
    Canberra, ACT
    Posts
    222

    Default

    Hi - I have tried a few of the suggestions and am still getting problems - the phone has been on the charger for a couple of hours, the charge level has not increased noticeably and it is hot to touch. I have the phone on contract with Telstra (less than 12 months) - who do I contact to get it checked out - Apple or Telstra? In the ACT, who would I speak with (no Apple Store as such)?
    Catbert6
    MacBook Air, MacBook Pro / iPad 2, 3, 4 / iPhone 4, 4S, 5 / "Frankenmac" with Intel Core i7 2600K @ 4.0 Ghz, Gigabyte Radeon 6870 and Mac OS 10.8.4

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