gsm or tdma or cdma

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CS - 01 Jul 2003 17:37 GMT

is cingular only gsm or do they have tdma or cdma service as well?
I know it sounds like a stupid question but I need to test if a gsm phone is
unlocked and a friend has cingular but she swears she doesnt have a sim
card.

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Dental\(stud\) - 01 Jul 2003 17:49 GMT

it's TDMA then

> is cingular only gsm or do they have tdma or cdma service as well?
> I know it sounds like a stupid question but I need to test if a gsm phone is
> unlocked and a friend has cingular but she swears she doesnt have a sim
> card.

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Cliff - 02 Jul 2003 03:14 GMT

Just pop the battery off and see if there is a SIM card there...if not
its TDMA

Dental(stud) wrote:

> it's TDMA then
>
[quoted text clipped - 5 lines]
>>unlocked and a friend has cingular but she swears she doesnt have a sim
>>card.

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Joseph - 02 Jul 2003 00:53 GMT

>is cingular only gsm or do they have tdma or cdma service as well?
>I know it sounds like a stupid question but I need to test if a gsm phone is
>unlocked and a friend has cingular but she swears she doesnt have a sim
>card.

cingular is both TDMA (IS-136) and GSM. Their original GSM 1900 areas
are California, Nevada, Washington state (formerly CA/NV were Pac
Bell), North Carolina, South Carolina, and eastern Tennessee. Other
cingular areas are now TDMA (IS-136) but are in process of overlaying
with 800/850 GSM.

She swears she doesn't have a SIM card probably because she's in a
TDMA (IS-136) area. cingular is a mixed technology company and even
most of the time they won't admit it or even don't know it. (Don't
ask a mall kiosk droid.)
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