Skip navigation

4.0.2 guzzling my battery. Your's too?

21597 Views 102 Replies Latest reply: Sep 15, 2010 6:52 AM by Kwopau RSS
1 2 3 ... 7 Previous Next
media360degree Calculating status...
Currently Being Moderated
Aug 12, 2010 11:25 PM
Ladies and Gentlemen,
I updated my iPhone 4 to iOS 4.0.2 on 11th Aug night, and I have experienced a much faster battery drain than before.

While my iPhone 4 used to sip battery with iOS 4.0.1 firmware, I can notice the difference that it is really draining a lot more battery than before, specially when I am using an app. On standby, however the battery drain issue is comparatively negligible.

What was surprising was, how can 4.0.2 be NOT better than 4.0.1, I mean it is not right?
But I expect Apple to take heed on this and solve this issue ASAP.

Have any of your experienced the same?

Macbook Pro, Mac OS X (10.6.4), iPhone 4, iOS 4.0.2
  • OrangeMarlin Level 5 Level 5 (5,130 points)
    Currently Being Moderated
    Aug 12, 2010 11:26 PM (in response to media360degree)
    No change here.

    BTW, the only thing that 4.0.2 did is fix a security hole.
    MacBook Pro (unibody). iPhone 4 (32GB). iPad 3G (64GB)., Mac OS X (10.6.4), No Windows here
  • ringokeitai Level 1 Level 1 (15 points)
    Currently Being Moderated
    Aug 12, 2010 11:38 PM (in response to media360degree)

    I think it's a different situation for every user? When I first received my phone, battery life was a bit sketchy (ie. Battery life drains quickly even when the phone is off) when it was running on 4.0.1.

    I updated to 4.0.2 and my battery life became normal (ie. I can have my phone on sleep for many hours and not see a drop in battery life %).

    Have you tried restoring as new? I read from other threads that restoring the phone as new helped with their battery issues.

    Perhaps an appointment with the Genius Bar would help sort this out.

    Message was edited by: ringokeitai
    iMac, Mac OS X (10.6.4), iPod Nano, iPhone 4, iPad, iBook G4
  • isoToxin Level 1 Level 1 (55 points)
    Currently Being Moderated
    Aug 13, 2010 1:07 AM (in response to media360degree)
    As far as standby drain goes:

    4.0.1, I lost about 9% battery leaving the phone for 7 hours overnight with everything enabled (push, email fetch 30min, wifi, mobile data, 3G etc).

    4.0.2, I lost 8% last night, exactly the same config.

    So they're exactly the same for me.
    Windows 7, Iphone4 32GB
  • maddhaeh Calculating status...
    Currently Being Moderated
    Aug 13, 2010 1:54 AM (in response to media360degree)
    When I update my iPhone 3G to 4.0.2 - it fail to update an error 1002 appear. Now my working condition is no longer working. It just stuck on connect to iTunes screen.

    To make it work, the warranty is over. I really dunno where to refer.
    iPhone 3G, iOS 4
  • designerdave Level 1 Level 1 (25 points)
    Currently Being Moderated
    Aug 13, 2010 1:54 AM (in response to media360degree)
    I would suggest book a genius reservation if you feel your battery is draining away at an unacceptable level (or peace of mind). I did for my first handset and have another booked for tomorrow with the same drainage issues - something that other iP4 owners in my life are not experiencing.

    If it's under warranty, you're good to go
    iMac, iPhone 4 32gb, Mac OS X (10.6.4)
  • LolitaJayne Level 1 Level 1 (10 points)
    Currently Being Moderated
    Aug 13, 2010 2:33 AM (in response to media360degree)
    I updated this morning and have actually noticed my battery life has increased. I know that this update was supposed to just be a security update, but i honestly have noticed a change in my battery. before on 4.0.1 the battery would drain in standby yet now with 4.0.2 it can sit in standby and not go down even 1 percent. Apart from that, that's the only thing i have noticed that's different with 4.0.2
    Macbook Pro 15inch 2.4Ghz Intel Core i5, Mac OS X (10.6.4), iPhone 4
  • designerdave Level 1 Level 1 (25 points)
    Currently Being Moderated
    Aug 13, 2010 2:34 AM (in response to media360degree)
    Hi Sam,

    Although this is a user forum, we can only hope that Apple engineers are taking on board our annotations - after all we (I use the term 'we' loosely as others are fine with their units) are the ones in limbo! It's just a shame that it takes the jailbreak scenario for them to actually do something to the firmware.

    With 4.1 will having a 'Christmas' load of fixes, who's to know when it will be released especially as it's into Beta 3. I've been monitoring (not babying though ) my second phone up until I thought, right, it's not my problem that this is happening so let the company that produced it sort it out. Maybe I'l get a replacement or maybe they'll say it's a common cause but for peace of mind, I'd rather know as to speculate.

    Life's too short and it's just a phone. Although saying that – and before people start waving their arms about after that comment - it's a great piece of kit
    iMac, iPhone 4 32gb, Mac OS X (10.6.4)
1 2 3 ... 7 Previous Next


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.