iPhone won't turn on after deep discharge *RESOLVED*

Discussion in 'iPhone' started by analytical44, Aug 12, 2009.

  1. analytical44 macrumors regular

    Mar 22, 2008
    In attemps to calibrate my battery, I let my phone die last night (around 3:00 AM) and left it dead until I got to work this morning (9:00 AM). When I plugged it in, nothing happened. I figured it was the outlet. Moved to another one, nothing. Figured I'd give it a few minutes; still nothing. I've never had this happen before with my orginal nor my 3G. Does anyone have any suggestions? Thanks.
  2. PhightinPhils26 macrumors 6502a


    Sep 12, 2007
    It sounds simple but, did you try pushing the power button? If that didn't work did you try doing a reset by pushing the top and home buttons for a few seconds. I have seen this happen a few times in other phones. If you still don't have any luck let it sit on the charger for about 15-20 and try again.
  3. analytical44 thread starter macrumors regular

    Mar 22, 2008
    Yup, tried both. Still non-responsive. I'll let it sit as you suggested but my gut tells me that it died on me. That would be so dissapointing.

    Edit: Didn't even notice your name or tag. Good to see some fellow Philadelphians on here. Big win last night eh? Let's see how Pedro does
  4. TSX macrumors 68030


    Oct 1, 2008
  5. iGary Guest


    May 26, 2004
    Randy's House
    Mine has taken as long as 10 minutes to actually boot after a deep discharge.
  6. honeytoast macrumors regular

    Sep 15, 2004
    bay area, CA
    This happened to me yesterday. I let it charge for a couple hours on the wall charger and another couple hours over USB. The battery never turned green. After a few hours of trying to turn it on with what should have been enough to fully charge it I ended up putting the phone in DFU mode and I doing a full restore. My phone has been fine ever since.
  7. analytical44 thread starter macrumors regular

    Mar 22, 2008
    Thanks for all of the replies. I resolved the issue by plugging the iPhone directly into the computer instead of the wall charger. When I did this, the red battery icon appeared. I then took it out and tried the wall charger again and it stared charging as usual.

    I'm really not sure why this happened. Anyone have any ideas?
  8. jayenh macrumors 6502a

    Nov 13, 2008
    isn't this type of rundown on this type of battery a bad thing? i thought a full depletion of the battery was not recommended and that the phone shuts down with charge remaining for this reason (though should be plugged in soon after to prevent all charge being lost)?

    would love to hear some facts on this (as opposed to opinion) as i thought draining to 10% - 20% followed by a full charge was enough to "calibrate".
  9. firewood macrumors 604

    Jul 29, 2003
    Silicon Valley
    It's not a bad thing, if not done often.

    Apple's own web site recommends running the battery down monthly (I prefer bi-annually). It won't damage the battery, if not done too often.

    The internal battery charge circuit will signal 0% and shut off the iPhone well before the battery is even close to being run down enough to being damaged. Your device will shut off even when the battery has a low but healthy voltage, and way before it gets too low. Just charge it up as soon as possible afterwords (don't store it for more than a week in this condition).

    So, go ahead and run it down to 0% occasionally. Then leave it on the charger an hour past 100%. Keep it closer to topped off most of the time and it will last a bit longer.

  10. analytical44 thread starter macrumors regular

    Mar 22, 2008
    Thanks for the detailed information.

    @ Jay: I usually do this about 4 times per year and have never had any battery issues. Been rather impressed actually. Not sure what happened this time.
  11. Dan73 macrumors 6502a

    Jul 30, 2009
    I'm in the process of running my battery down. I use to get really good battery life on my 3G S (WAY better than I ever had on my 3G)

    But lately it has been kind of bad. Don't know what happened.
  12. Xtgirl macrumors regular

    Jul 15, 2007
    Whenever I mistakenly allow my phone to die....I have a really hard time getting it to come back on...it just stays on that red battery screen and never charges.

    Usually I have to restore on the computer to get it back and I have to attempt a restore about 5 times before it responds....super annoying so I try never to allow it to go 10%.
  13. Mr.Noisy macrumors 65816


    May 5, 2007
    Completely off topic analytical44 , I just needed to upload that dock for you, hope it's the right one ;)

    Sorry folks, just a private thing ;)

    Attached Files:

  14. benam macrumors newbie

    Jan 14, 2015
    Today morning when phone was off because of discharging won't able to start charging again.

    Till Yesterday phone battery backup was good as well as charging also good but suddenly today when phone was switched off it's not able to start charging.
    I remove the battery and put on other old iphone and its start charging. when I put this 1% charged battery in my original phone now its charging fine.

    its only happen when battery deep discharge only ..
    I have DFU and Restore this phone few time but no luck.
    Bought new battery but same thing happen...

    I do not know whats wrong?
  15. scaredpoet macrumors 604


    Apr 6, 2007
    Apple USED to recommend this, but they don't any longer. All they recommend now is just use the phone (and battery) normally and avoid temperature extremes.


    Yes, the battery ran down, and iPhones generally won't power up right away on a standard iPhone charger until the battery has gotten some charge. This can take up to 20 minutes.

    The reason for this delay is that the compact charger that comes with your phone is not capable of supplying enough power to both charge the battery and power the phone when it's operating at its maximum power output. Your Mac, however, can deliver the higher power output for this, and so it will power up again a little bit sooner. The same would be true if you used an iPad charger.

    In the future, don't purposefully run down your battery. You don't need to deliberately do this anymore. Deliberate battery calibrations are no longer necessary.
  16. Intell macrumors P6


    Jan 24, 2010
    When Firewood posted that, back in 2009, that was accurate and on Apple's site. It still is accurate to some degree, but it not stated as such by Apple.
  17. Newtons Apple macrumors Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
    Unless your battery calibration is off I would NEVER discharge the phone. Just adding extra cycles for little advantage.

    Just plug it in when you sleep and it will be ready the next day.
  18. geoff5093 macrumors 68020


    Sep 16, 2014
    Dover, NH
    Batteries get worse with age
  19. venomgt95 macrumors 6502


    May 8, 2014
    I run (or at least try to) my batteries on all my iDevices completely dead once a month. I even made a calendar event to remind me. My iPod works as it did on day one (Got it refurbed in 2012) and my iPhone (a 3GS no doubt) works good enough. (considering its age AND its been underwater)
  20. wesk702 macrumors 68000


    Jul 7, 2007
    The hood
    I usually just take a nap after a deep discharge.
  21. FieldingMellish Suspended

    Jun 20, 2010
    I discharge a new phone till it stops working and turns off. Then I charge it up to 100%. I might do that a couple times a year after the initial one.
  22. Sujoy macrumors newbie


    Aug 23, 2016

    I am facing a critical problem with my iPhone 6. Battery Charge was 2% when i was @ work. Couldn't charged my phone. After full discharge it's never turned on again. Tired all the ways with Home + Power button or Home + Power + Vol +/- button. Still no response. Screen is blank. Charged it with Wall charger as well as computer. No battery sign too. Please help.
  23. Tyler23 macrumors 603


    Dec 2, 2010
    Atlanta, GA

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