anyone know why my iphone 4s charges significantly faster than my samsung galaxy s2?

Discussion in 'iPhone' started by stevelam, Jan 5, 2012.

  1. stevelam macrumors 65816

    Nov 4, 2010
    is it the difference in charging ports?
    micro usb vs apple proprietary charger?

    granted the samsung s2's battery capacity is a little larger (1650 mAh compared to iphone 4s 1432 mAh) but the difference in speed is huge. without any scientific testing and just from general observation from owning both, i'd say the iphone 4s probably charges about 5x faster.

    this is from my laptop usb to phone.
  2. rever3nce macrumors 6502a


    Apr 6, 2011
    Cuz one is made by Apple and one is made by a copy cat
  3. ecwhite4S macrumors 6502

    Dec 17, 2011
    Los Angeles, CA
    I think it's because of Apples method of charging. 30 pin connector vs mini usb? Not sure though. I agree, the my 4S charges pretty quickly.
  4. rever3nce macrumors 6502a


    Apr 6, 2011
    I'm just messing with ya... but yes it does have to do with 30 pin connector. Iphones do tend to charge a lot faster than most others. I know for a fact though that through a USB cable it takes up to 20% longer to fully charge on any phone
  5. Prof., Jan 5, 2012
    Last edited: Jan 5, 2012

    Prof. macrumors 601


    Aug 17, 2007
    The iPhone charges from 0 to 89% rather quickly, in like an hour (maybe 90 mins) or so. It then starts trickle charging when it hits 90% and continues to charge this way until it is fully charged. This insures an accurate, full charge.
  6. sentinelsx macrumors 68010

    Feb 28, 2011
    Because sometimes companies like to make stupid decisions. They capped the transfer rate to very low amount (i forgot the numbers but there are threads on this floating in xda and anandtech with exact specs) and even lower when connected to a computer. Since it cannot be bypassed you are stuck with a slower charge than the device is actually capable of.
  7. SurferMan, Jan 5, 2012
    Last edited: Jan 5, 2012

    SurferMan macrumors 65816

    May 14, 2010
    South FL
    The above post is correct, the transfer rate is capped on many androids, no one knows why except a repeated rumor is to keep heat down, as others have developed kernals to increase the rate with no issues. Plus the batteries are generally bigger then the iphones' as well, I think the iPhone can hit 1 amp charging to an outlet if I'm not mistaken, where I think my S2 is capped at 650 or so?

    From dead to 100% my 4 takes about 2-2.5 hours, my i777 S2 about 3-3.5 hours when plugged into an outlet. If on usb to a computer about the same difference (an hour or so).
  8. walie macrumors 6502a

    Nov 15, 2010
    correct, it has nothing to do with the type of cable
  9. bp1000 macrumors 65816

    Jul 7, 2011
    Perhaps the chargers have different mAmp ratings.
  10. TM WAZZA macrumors 68000

    Sep 18, 2010
    Hamilton, New Zealand
  11. vitzr macrumors 68030


    Jul 28, 2011
    Yes, it's true. Slower charging generates less heat. Yet that said, it's largely the choice of the manufacturer that plays a part in how fast they want their device to charge. The difference in charging times between Apple & Android is not dramatic enough to impact the long term life of the battery, when most users only keep a phone for two years or so. Apple has always been very good at optimizing battery life vs charging rates, therefore they usually provide the best solution for their iPhones & Laptops.
  12. cole01 macrumors 6502

    Dec 29, 2008
    this is one of the things that I absolutely couldn't stand about the GSII, succcch a slow charger
  13. aphexacid macrumors 6502a


    Jul 31, 2007
    it has nothing to do with the damn cable.

    Countless reviewers have said that for some reason, these samsungs take a long time to charge. The HTC's are normal.

    Latest review i can think of is Aaron from phonedogs review of the SGS2. He talks about the SLOW charging in samsungs
  14. takeshi74 macrumors 601

    Feb 9, 2011
    What type of laptop? What type of USB ports does it have?

    From the OP:
  15. Jordan921 macrumors 601


    Jul 7, 2010
    Bay Area
    I could understand if you they were the same phone but they aren't.
  16. darngooddesign macrumors G3

    Jul 4, 2007
    Atlanta, GA

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