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  1. #1
    Jonathan
    Guest
    Greetings,

    Just some simple questions from one who has always tried not to get too deep
    into cellular technology:

    If I have a cellphone from one manufacturer that works on the Cingular GSM
    network locally (for example a Nokia that works on Cingular's GSM 850/1900
    network), can I switch my SIM card to another phone that is unlocked but
    also works on the same Cingular GSM network (for examaple, an unlocked
    Sony-Ericson on the same 850/1900 network)?

    Will I lose or have to reset any features (like voicemail) because the
    phones are from different manufacturers?

    Will I lose any service quality?

    If I save all of my phone numbers to the SIM card, will I still have full
    access to them in a phone from a different manufacturer?

    Thanks for any sage words of wisdom.

    Cheers - Jonathan





    See More: Basic GSM Question




  2. #2
    BruceR
    Guest

    Re: Basic GSM Question



    From:Jonathan
    [email protected]

    > Greetings,
    >
    > Just some simple questions from one who has always tried not to get
    > too deep into cellular technology:
    >
    > If I have a cellphone from one manufacturer that works on the
    > Cingular GSM network locally (for example a Nokia that works on
    > Cingular's GSM 850/1900 network), can I switch my SIM card to another
    > phone that is unlocked but also works on the same Cingular GSM
    > network (for examaple, an unlocked Sony-Ericson on the same 850/1900
    > network)?


    Yes.

    >
    > Will I lose or have to reset any features (like voicemail) because the
    > phones are from different manufacturers?


    No.
    >
    > Will I lose any service quality?


    Only if the phone isn't as good as the old one.
    >
    > If I save all of my phone numbers to the SIM card, will I still have
    > full access to them in a phone from a different manufacturer?


    Yes.
    >
    > Thanks for any sage words of wisdom.
    >
    > Cheers - Jonathan






  3. #3
    John Navas
    Guest

    Re: Basic GSM Question

    [POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

    In <[email protected]> on Sun, 09 Oct 2005 06:44:07
    -0700, Joseph <[email protected]> wrote:

    >On Sun, 09 Oct 2005 03:31:29 GMT, "Jonathan"
    ><[email protected]> wrote:
    >
    >>If I have a cellphone from one manufacturer that works on the Cingular GSM
    >>network locally (for example a Nokia that works on Cingular's GSM 850/1900
    >>network), can I switch my SIM card to another phone that is unlocked but
    >>also works on the same Cingular GSM network (for examaple, an unlocked
    >>Sony-Ericson on the same 850/1900 network)?

    >
    >As long as it's unlocked and is capable of the frequencies used in
    >your area i.e. capable of GSM @ 850 or at 1900 all you need to do is
    >take the SIM chip from one phone/device and put it in the other
    >phone/device.
    >
    >>Will I lose or have to reset any features (like voicemail) because the
    >>phones are from different manufacturers?

    >
    >You will of course not lose any *network* features. Fast dial
    >settings will have to be re-applied.


    Caveat: If the old cellphone is ENS capable and the new cellphone is not ENS
    capable, then you would of course lose the ENS feature, which allows Cingular
    to Home you to either the "blue" (old ATTWS) or "orange" (old Cingular)
    networks, depending on which would give you the better signal.

    >>Will I lose any service quality?

    >
    >None at all except that perhaps one model or make of handset may
    >perform better or worse than another, but it has nothing to do with
    >the SIM.


    Same caveat: If you lose ENS, then you'll be stuck on "orange", which could
    mean poorer service if "blue" has a better signal in your area.

    Bottom line: If you have an ENS (64K) SIM, then it's best to get an ENS
    capable cellphone.

    --
    Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
    John Navas <http://navasgrp.home.att.net/#Cingular>



  4. #4
    DevilsPGD
    Guest

    Re: Basic GSM Question

    In message <[email protected]>
    John Navas <[email protected]> wrote:

    >Caveat: If the old cellphone is ENS capable and the new cellphone is not ENS
    >capable, then you would of course lose the ENS feature, which allows Cingular
    >to Home you to either the "blue" (old ATTWS) or "orange" (old Cingular)
    >networks, depending on which would give you the better signal.


    Well sure. And if your new phone isn't MMS capable then you'll lose the
    ability to send MMS from your handset.

    --
    In Jolt We Trust



  5. #5
    matt weber
    Guest

    Re: Basic GSM Question

    On Sun, 09 Oct 2005 03:31:29 GMT, "Jonathan"
    <[email protected]> wrote:

    >Greetings,
    >
    >Just some simple questions from one who has always tried not to get too deep
    >into cellular technology:
    >
    >If I have a cellphone from one manufacturer that works on the Cingular GSM
    >network locally (for example a Nokia that works on Cingular's GSM 850/1900
    >network), can I switch my SIM card to another phone that is unlocked but
    >also works on the same Cingular GSM network (for examaple, an unlocked
    >Sony-Ericson on the same 850/1900 network)?

    As long as you don't try to put a 3v sim into an antique that only
    supports 5V Sim cards, your phone and your, are whever the SIM is, and
    if you have a small sim, It won't in one of the older phones (like
    Ancient Nokia's that use a SIM about the size of Credit card)..

    One of the Beauties of GSM is your phone is whatever phone your SIM is
    in. Only thing to watch out for is you may have things stored in the
    phone memory as opposed to the SIM memory, and those don't travel with
    the SIM, although many phones allows you to copy the phone memory into
    the SIM, and back out of the SIM into the phone memory.
    >
    >Will I lose or have to reset any features (like voicemail) because the
    >phones are from different manufacturers?

    NO
    >
    >Will I lose any service quality?

    Depends upon the phone. It is a crummy phone, you'll get crummy
    service quality....
    >
    >If I save all of my phone numbers to the SIM card, will I still have full
    >access to them in a phone from a different manufacturer?
    >
    >Thanks for any sage words of wisdom.
    >
    >Cheers - Jonathan
    >





  6. #6
    cledus
    Guest

    Re: Basic GSM Question

    Jonathan wrote:
    > Greetings,
    >
    > Just some simple questions from one who has always tried not to get too deep
    > into cellular technology:
    >
    > If I have a cellphone from one manufacturer that works on the Cingular GSM
    > network locally (for example a Nokia that works on Cingular's GSM 850/1900
    > network), can I switch my SIM card to another phone that is unlocked but
    > also works on the same Cingular GSM network (for examaple, an unlocked
    > Sony-Ericson on the same 850/1900 network)?
    >
    > Will I lose or have to reset any features (like voicemail) because the
    > phones are from different manufacturers?
    >
    > Will I lose any service quality?
    >
    > If I save all of my phone numbers to the SIM card, will I still have full
    > access to them in a phone from a different manufacturer?
    >
    > Thanks for any sage words of wisdom.
    >
    > Cheers - Jonathan
    >
    >

    You may lose some of the data network settings if the phone is not a
    "Cingular Branded" phone. This might cause web browsing and MMS
    features to not work until the correct settings are entered. Otherwise
    you should be OK. And if you are simply swapping one Cingular branded
    phone for another, this should be transparent since the settings are
    loaded by the manufacturer.

    If you saved photos, ringtones, email addresses, etc in your old phone,
    those do not transfer with the SIM. But the basic, SIM-based address
    book will.




  7. #7
    Tom
    Guest

    Re: Basic GSM Question

    So where would he find a listing of the needed settings to modify??

    "cledus" <[email protected]> wrote in message
    news:kMi2f.197$q%[email protected]
    > Jonathan wrote:
    >> Greetings,
    >>
    >> Just some simple questions from one who has always tried not to get too
    >> deep into cellular technology:
    >>
    >> If I have a cellphone from one manufacturer that works on the Cingular
    >> GSM network locally (for example a Nokia that works on Cingular's GSM
    >> 850/1900 network), can I switch my SIM card to another phone that is
    >> unlocked but also works on the same Cingular GSM network (for examaple,
    >> an unlocked Sony-Ericson on the same 850/1900 network)?
    >>
    >> Will I lose or have to reset any features (like voicemail) because the
    >> phones are from different manufacturers?
    >>
    >> Will I lose any service quality?
    >>
    >> If I save all of my phone numbers to the SIM card, will I still have full
    >> access to them in a phone from a different manufacturer?
    >>
    >> Thanks for any sage words of wisdom.
    >>
    >> Cheers - Jonathan

    > You may lose some of the data network settings if the phone is not a
    > "Cingular Branded" phone. This might cause web browsing and MMS features
    > to not work until the correct settings are entered. Otherwise you should
    > be OK. And if you are simply swapping one Cingular branded phone for
    > another, this should be transparent since the settings are loaded by the
    > manufacturer.
    >
    > If you saved photos, ringtones, email addresses, etc in your old phone,
    > those do not transfer with the SIM. But the basic, SIM-based address book
    > will.
    >






  8. #8
    Marty
    Guest

    Re: Basic GSM Question

    Somewhere around Sun, 09 Oct 2005 14:47:58 -0600, while reading
    alt.cellular.cingular, I think I thought I saw this post from DevilsPGD
    <[email protected]>:

    >In message <[email protected]>
    >John Navas <[email protected]> wrote:
    >
    >>Caveat: If the old cellphone is ENS capable and the new cellphone is not ENS
    >>capable, then you would of course lose the ENS feature, which allows Cingular
    >>to Home you to either the "blue" (old ATTWS) or "orange" (old Cingular)
    >>networks, depending on which would give you the better signal.

    >
    >Well sure. And if your new phone isn't MMS capable then you'll lose the
    >ability to send MMS from your handset.


    And don't forget to mention, if the new phone is broken, you'll lose the
    ability to make or receive calls.
    --
    Marty - public.forums (at) gmail (dot) com
    "Those are my principles, and if you don't like them...
    well, I have others." - Groucho Marx



  9. #9

    Re: Basic GSM Question

    John said ..."the ENS feature, which allows Cingular
    to Home you to either the "blue" (old ATTWS) or "orange" (old Cingular)
    networks,..."

    Thanks John, I was unaware of that distinction between phone
    capabilities.

    Do newer GSM phones typically have the ENS feature?

    Dave




  10. #10
    John Navas
    Guest

    Re: Basic GSM Question

    [POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

    In <[email protected]> on 11 Oct 2005
    04:48:59 -0700, [email protected] wrote:

    >John said ..."the ENS feature, which allows Cingular
    >to Home you to either the "blue" (old ATTWS) or "orange" (old Cingular)
    >networks,..."
    >
    >Thanks John, I was unaware of that distinction between phone
    >capabilities.
    >
    >Do newer GSM phones typically have the ENS feature?


    My understanding is that all those sold by Cingular in 2005 have ENS
    capability.

    --
    Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
    John Navas <http://navasgrp.home.att.net/#Cingular>



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