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  1. #1

    Member Since
    Sep 29, 2009
    On a limited data plan (prepaid SIM) -- when does iPhone access internet?
    I bought an O2 SIM card in Germany yesterday and successfully got both the phone and data working on my unlocked phone. I had 15 Euros credit on it. Today I have no credit.. I'm trying to figure out how I could have used up all of my credit so quickly. The only thing I can think of is if my phone might be constantly connecting to the internet via the phone service. Does the iPhone access the internet even when the screen is off? Even when no apps are open? Even if there's wifi available? I'm trying to figure out if there is there any way I could have been connected for many hours yesterday without realizing it?
    thanks much,

  2. #2

    Member Since
    Sep 03, 2009
    13" Unibody Macbook Pro, Iphone 4 16G
    I'm pretty sure that is the case, i think that is why AT&T MAKES you get a data plan, its required with the iphone, im no expert though, good luck figuring it out

  3. #3

    DanFlan's Avatar
    Member Since
    Sep 27, 2009
    15 Inch MacBook Pro. 2.4 GHz. 2GB RAM. 250GB Hardrive.
    I think that is correct. Just make sure when you are not using your phone for the internet, go to your Settings App> Wi-Fi> and switch it off. This might solve your problem. If not I would call your carrier.
    "60% of the time it works, every time."
    - Brian Fantana

  4. #4

    Raz0rEdge's Avatar
    Member Since
    Jul 17, 2009
    27" i7 iMac, 15" Macbook Pro TB, 13" Macbook Air, iPhone 6S, iPod Nano 7th Gen
    Make sure you disable Push functionality which will cause the iPhone to talk to servers for can also switch it into Airplane mode to kill the cell part (I believe Wifi dies as well) to prevent it from getting out.

    The iPhone was designed to have ready access to the Internet through Wifi or cell, so unless you turn it off or go into Airplane mode, it can talk to the servers anytime it wants and use up credits.


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