switch off data tx but still get SMS

Discussion in 'iPhone' started by Guest, Nov 7, 2010.

  1. Guest

    Guest Guest

    I want to disable data transfer to stop charges . However if I use the
    data off switch in my iPhone 4 I lose the SMS function. How can I do
    this?
    Previously on my iPhone 3 , I used fakeapn but I understand that this
    app should not be used with Ios 4.xx
    -keevill-
     
    Guest, Nov 7, 2010
    #1
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  2. Guest

    -keevill- Guest

    That's a really useful answer ! Keep up the good work
    -keevill-
     
    -keevill-, Nov 7, 2010
    #2
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  3. Guest

    Guest Guest

    use iphone configuration utility to change the apn. no need for a
    skanky app.
     
    Guest, Nov 7, 2010
    #3
  4. Guest

    Lewis Guest

    It is a very useful answer. If you switch of data it will stop SMS
    because SMS is data. If you want SMS, you must be able to receive data.

    This is not complicated.
     
    Lewis, Nov 7, 2010
    #4
  5. Guest

    Wes Groleau Guest

    I have the original "unlimited data" plan, yet they
    charge me an additional forty cents per SMS message.

    Hmmm.

    I know someone who told AT&T that they had got a different
    model phone and no longer wanted the data plan. Surprisingly,
    AT&T believed them and reduced the bill accordingly.

    Murphy says, however, that if you try to get away with the
    same thing, you'll probably get caught.

    --
    Wes Groleau

    A pessimist says the glass is half empty.
    An optimist says the glass is half full.
    An engineer says somebody made the glass
    twice as big as it needed to be.
     
    Wes Groleau, Nov 7, 2010
    #5
  6. Guest

    Peter Guest

    Possibly.

    In Europe, SMS goes via GSM. "Data" normally means GPRS or (one of the
    many favours of) 3G.

    If you have the wrong APN configured in the phone, voice calls and SMS
    work fine but you get no "data".

    If Apple's "Politburo to oversee what information the Great Unwashed
    should be provided with" see it differently, that's a different matter
    entirely.
     
    Peter, Nov 7, 2010
    #6
  7. 40¢? I thought the charge was 20¢ per message.

    If you have to have a data plan to get SMS, as JR says, how come people
    without data plans (on other model phones, of course) can send and receive
    SMS?
     
    Michelle Steiner, Nov 7, 2010
    #7
  8. Guest

    JF Mezei Guest


    SMS is not data. It uses the telephony control channel to send/receive
    SMSs. It does not use the GPRS/HSPA side of things.
     
    JF Mezei, Nov 7, 2010
    #8
  9. Guest

    Lewis Guest

    taht is becuse the US Carriers see SMS as a huge cash cow. It has
    nothing to do with the technical fact that SMS is data.
    AT&T can see the iphone on their network, which means they can start
    charging for the data any time they figure it out. They will charge
    rather more than the current data plans, I would guess.
     
    Lewis, Nov 8, 2010
    #9
  10. Guest

    JF Mezei Guest

    taht is becuse the US Carriers see SMS as a huge cash cow. It has

    SMS is not "data". It is telephone signaling information using the same
    channels as call setup, call reception or just keeping in touch with the
    nearest tower.

    Sending an SMS uses the same channel as when you press "SEND" to dial a
    phone number.

    Similarly, receiving an SMS is the same process as when you receive a
    phone call. The control channel gets a packet that says "incoming phone
    call from <number>" which causes the phone to ring. When you answer, the
    phonse sends another packet on thatc ontrol channel saying "OK,
    establish the call", at which point a real data channel is established
    to carry the binary data containing the sounds of the phone conversation.
     
    JF Mezei, Nov 8, 2010
    #10
  11. Guest

    Guest Guest

    I think the point was that these "packets" to which you refer are not
    packets of marshmallows or pixie dust, but data.[/QUOTE]

    voice is digitally encoded, and therefore it is data too.
     
    Guest, Nov 8, 2010
    #11
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