Question about iPhone applications and battery usage

Discussion in 'iPhone' started by Bowlerguy10, Jun 14, 2009.

  1. Bowlerguy10 macrumors 6502

    Sep 23, 2007
    At my computer
    This is something I have always wondered about native and even 3rd party apps. Say I'm having an SMS conversation and I sent a text and then lock my screen with the SMS application still up and running, does this use battery life? What about other applications? I have always been in the habit of hitting the home button and making sure the application closes and then locking the screen and then just unlocking and going to application whenever a message comes in or whatever it may be.
  2. Maclver macrumors 68020


    Nov 23, 2008
    36°07′53″N 95°56′14″W
    I believe once you lock your iphone your application is stopped and when you unlock it, its brought back to its previous state that you left it in
  3. AmpCoder macrumors 6502

    Mar 27, 2007
    I wouldn't think the SMS application would use any extra battery life running like that. However, if it is an application like AIM or anything that uses the Internet connection constantly, it would definitely drain the battery much faster.
  4. AmpCoder macrumors 6502

    Mar 27, 2007
    Depends on the app. For example, AIM still receives messages when the phone is asleep/locked.

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