iphone battery! whats going on!?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by billyjoegibsonx, Feb 20, 2010.

  1. billyjoegibsonx macrumors 6502

    Joined:
    Sep 10, 2008
    #1
    Hey!

    going to try keep this short and sweet since i just typed out loads and my browser decided to log me out! lol!

    right so here it is:

    yesterday 11:20am. got a replacement iphone 3gs. came home sync'd and fully charged phone. used as normal for texting/surfing wifi/gprs. 1/4 brightness. no 3g, location services or push. battery indicator went down a little but after another few hours of using i noticed it wasnt going down so checked percentage and it had only moved 1% I was so happy with excellent battery performance. Went to use phone later but the phone had turned off! why would it turn off with about 3/4 full battery? Okay so when i went to sleep i had bout 50-60% battery. on standby all night. woke up with bout 40-50% battery. decided to plug in phone for 20-30 minutes for extra juice. battery goes red and down to 16%! WHY!? a few hours later of usage, was still at 16% so turned phone off a few minutes. was up at 56% great i thought! now that was 4-5 hours ago and im at 42% battery.

    since yesterdays full charge after getting the phone ive had 4 hours 20 minutes of usage and 22hours 40 minutes standby. but i've had it plugged in 20-30 minutes this morning aswell. should i just calibrate my battery to stop it gettingconfused or take it back? cause it certainly shouldnt be turning off at 3/4 full battery and showing 16% battery when i unplugged from charging the phone up from 40 or so %.

    please reply!
     
  2. nimski62 macrumors regular

    Joined:
    Feb 20, 2008
    #2
    take it back..

    had a 3gs like this once and multiple restores didn't solve the problem.
     
  3. firewood macrumors 604

    Joined:
    Jul 29, 2003
    Location:
    Silicon Valley
    #3
    Calibrate it. At least one, maybe 2 full cycles, with no half charge/discharges. Until then the battery gauge is just making wild guesses, because it's never seen that battery before.
     
  4. billyjoegibsonx thread starter macrumors 6502

    Joined:
    Sep 10, 2008
    #4
    okay thats what i was thinking of doing, and is what i'am doing atm. have it on charge plugged into my macbook. if it still does this then i should take it back?

    also, what is there to explain my iphone suddenly turning off (happened twice now) while having 3/4 battery OR being on charge? Second time it happened, just within the last 5 minutes, it was plugged and charging into itunes. It still appeared in iTunes but there was no battery indicator beside the name of my iphone, so i unplugged it, and connected it again and then the :apple: came up.

    thanks :)
     
  5. Dan73 macrumors 6502a

    Joined:
    Jul 30, 2009
  6. DaZe3 macrumors member

    Joined:
    Aug 26, 2008
    #6
    since the 3.1.3 update my battery has been so much better
     
  7. ajohnson253 macrumors 68000

    ajohnson253

    Joined:
    Jun 16, 2008
    #7
    I didn't know the new 3.1.3 was fixing battery issues.
     

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