Why can't I use T68i

Why can't I take the sim from my T62u and put it in my T68i? The T68i shows
a couple of bars for a few seconds, then no signal.

Is it because Cingular is on 850 and the T68i is on 900?

If that's the case, why'd dey do dat?

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Scott wrote:
> Why can't I take the sim from my T62u and put it in my T68i? The T68i shows
> a couple of bars for a few seconds, then no signal.
>
> Is it because Cingular is on 850 and the T68i is on 900?
>
> If that's the case, why'd dey do dat?
>
>
>

Where do you live? That should help us figure out if Cingular uses 850
there, and if there are no 1900 GSM carriers available.

The SE T68i uses GSM in the bands of 900, 1800, and 1900. In the United
States and Canada, bands of 800/850 and 1900 are used. It is possible
that Cingular is using the 850 band where you live, in that case you may
not get a signal. T-Mobile, AT&T, and most GSM providers use 1900.

SE did this so that if you use 1900 in the United States, you could go
to other countries and use the same phone.

The best solution for a world phone would be GSM 850/900/1800/1900.

AD

>Is it because Cingular is on 850 and the T68i is on 900?
>
>If that's the case, why'd dey do dat?

The T68i was designed as a world phone (900/1800/1900) before any of the US
companies started implementing 800 (note I said 800 and not 850) GSM.

It's an age thing!

--
John S.
e-mail responses to - john at kiana dot net

>T-Mobile, AT&T, and most GSM providers use 1900.

Not necessarily true. AT&T is implementing their 800MHz GSM service as quickly
as possible whether they have 1900 in the same market or not.

For instance in the NYC metromess they have over 3000 sites that are having
800MHz GSM installed as we speak.

--
John S.
e-mail responses to - john at kiana dot net

> The T68i was designed as a world phone (900/1800/1900) before any of the US
> companies started implementing 800 (note I said 800 and not 850) GSM.


Any idea why GSM is called 850 but AMPS, TDMA, and CDMA are called 800
when they're actually the same band?

AD

John S. wrote:
>>T-Mobile, AT&T, and most GSM providers use 1900.
>
>
> Not necessarily true. AT&T is implementing their 800MHz GSM service as quickly
> as possible whether they have 1900 in the same market or not.
>
> For instance in the NYC metromess they have over 3000 sites that are having
> 800MHz GSM installed as we speak.
>

I apologize. I was under the impression from AT&T that they only offer
GSM 1900 (at least at the moment). However, I have never dealt much
with AT&T. I do know they offer 800 AMPS/TDMA.

AD

"About Dakota" <[email protected]> wrote in message
news:[email protected]...
> > The T68i was designed as a world phone (900/1800/1900) before any of the
US
> > companies started implementing 800 (note I said 800 and not 850) GSM.
>
> Any idea why GSM is called 850 but AMPS, TDMA, and CDMA are called 800
> when they're actually the same band?

Yogurt says, "Marketing! We've got Spaceballs the T-Shirt! Spaceballs
the coffee mug! Spaceballs action figures!" quoting Mel Brooks

John C.