MORE battery stuff......a theory.

Discussion in 'iOS 5 and earlier' started by NJFP, Dec 5, 2011.

  1. NJFP macrumors 6502

    Feb 18, 2009
    OK, this has been hashed to death in a gazillion threads but I haven't seen a posting that answers my specific question.

    IP4 with iOS 5.01. When at work my battery will go from 100% to about 45 to 65% by end of shift (12 hour shifts).
    BUT... when at home, it will last two days. Sometimes two and a half.

    I have WiFi enabled. Does my iPhone continually search for an open WiFi, not finding one, keeps the search up and this is what's eating my battery?

    I have no WiFi available at work, and of course it locks on to my home signal as soon as I walk in the door. (Or sooner, haven't looked!) Could this be it?
  2. 42streetsdown macrumors 6502a


    Feb 12, 2011
    Gallifrey, 5124
    Maybe, try turning WiFi off at work to see if it drains less battery.
  3. SandboxGeneral Moderator emeritus


    Sep 8, 2010
    Orbiting a G-type Main Sequence Star
    Yep. It will always search for a WiFi connection if it's turned on and not connected to one. Just like it will search for a cellular signal and waste the battery doing so until it finds one.
  4. stormchaser macrumors 6502


    Mar 4, 2010
    Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

    I get the same as you at work with my 3GS. But at home can go 2 days or more.
  5. seajay96 macrumors 6502

    Jun 26, 2010
    It's not just wi-fi. the same thing applies to your cellular radio, if it is constantly searching for a better signal and switching from edge to 3g, your battery life will suffer.
  6. Small White Car macrumors G4

    Small White Car

    Aug 29, 2006
    Washington DC
    While this is true, it's been true since 2007 and thus has nothing to do with people's iOS 5 / iPhone 4S battery problems

    So...yes, but probably not something people with big problems right now will be excited to hear about.
  7. NJFP thread starter macrumors 6502

    Feb 18, 2009
    Thanks to all who answered. This is my first iPhone, and I've only had it for a few months, then it jumped right to iOS5. My experience with iPhones are limited. Thanks again.
  8. Arelunde macrumors 6502a


    Jul 6, 2011
    CA Central Coast
    If you travel a distance to get to work, as long as you are on 3G, you might want to *228/Option 2 (update roaming) when you get to work and again when you get home. This will lock you into the nearest cell tower and eliminate your iPhone's need to deal with a weak signal or endlessly search for one.
  9. urkel macrumors 68030

    Nov 3, 2008
    This is exactly why Wifi should have an OPTIONAL toggle switch in the pull down panel to easily turn it off and on.
  10. white4s macrumors 65816

    Nov 15, 2011
    New Jersey
  11. jeremyshaw macrumors 6502

    Oct 29, 2011
    Would be a good use of that vibrate/ring switch. Make it have different modes, like the iPad's switch.
  12. urkel macrumors 68030

    Nov 3, 2008
    Uh-oh, you mentioned adding buttons to an Apple product. Now someone who doesn't understand the convenience of key features being easily accessible is going to post that stupid mockup of an iPhone with 100 buttons and think he's hilarious.

    Buttons aren't bad if they're useful. That said, I'd prefer a Siri button over a WiFi one.
  13. Macman45 macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
    As A General Rule

    And I'm using a 4S now, I have wifi on and connected at home so I just use my network.

    When I go out, I turn wifi off, and 3G kicks in automatically. My battery life is still not as good as the 4, but it has improved enough so that I no longer carry my 4 around too.
  14. bgtrack macrumors regular


    Jun 6, 2011
    East Lansing
    Your battery is always going to be better on wifi than 3g...if you are using 3g at work it will explain why the battery is lower.
  15. takeshi74, Dec 6, 2011
    Last edited: Dec 6, 2011

    takeshi74 macrumors 601

    Feb 9, 2011
    ^ This is more likely IMO.

    Not sure why people keep saying that. It's generally rare that something is so unique about a given situation that it's not like other situations. Don't miss the forest for the trees. The 3G versus WiFi thing is pretty common.

    *228 updates your PRL list. It does not "lock you on to the nearest tower".
  16. DNAppleGold macrumors regular

    Apr 9, 2009
    While note a Wifi toggle, there is a way to get an "app" that will turn wifi on/off on your homepage (as opposed to clicking setting, wifi, and then on/off). Check out this sight. He's added profiles that look like apps to get to setting such as wifi, airplane mode, and location services. The look great and work wonderfully. They are free, but through the guy something. I have no connection him- really.
  17. RosyT macrumors newbie

    Nov 2, 2011
    Solution- Carry around your charger with you all the time like i do :) Hahah ;)
  18. NJFP thread starter macrumors 6502

    Feb 18, 2009
    Not a bad idea, but not practical for me!

    Did the "no wifi" test today. Meh, maybe yes, maybe no to better battery life. Hard to say. I was out of the office for most of the day, and it's when I'm IN the office that the battery dumps fast. More experimenting is in order.
  19. Markc1024 macrumors member

    Jun 19, 2011
    When your iPhone goes into lock mode, wifi turns off automatically anyway. It will only be searching for a connection if you have it on.

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